Boundaries vs Ultimatums
Barbara Heffernan • July 18, 2025

Are you setting boundaries or are you issuing ultimatums? What's the difference between a boundary and an ultimatum? When is an ultimatum needed?
An ultimatum might be
a boundary that you're setting that has a very severe consequence that you intend to follow through with.
Or an ultimatum might be a boundary that's combined with a threat.
Understanding the distinction between boundaries, ultimatums, and threats can mean the difference between creating healthier relationships and inadvertently damaging them. Today's blog will help you understand when each approach is appropriate and how to navigate these challenging interpersonal dynamics.
Understanding What Boundaries and Consequences Really Are
You've probably heard that boundaries go with consequences.
If we set a boundary, it usually has some type of consequence, and some of those consequences are very natural.
There are natural consequences in terms of how we feel or what we might do. There are natural consequences on a relationship if somebody violates a boundary.
We can also set a very specific consequence if a boundary is violated. But not all of those consequences have to be extreme. Not all of those consequences have to threaten the end of a relationship.
The actual definition of a boundary is that it's a real or imagined line that marks the edge or limit of something. Boundaries are really about your limits—your structures for navigating the world. They can be purely about yourself and your own self-care, or they can be about what behaviors in relationships you will accept, which ones you won't be happy with, and which ones you absolutely will not accept.
The actual definition of a boundary is that it's a real or imagined line that marks the edge or limit of something. Boundaries are really about your limits—your structures for navigating the world. They can be purely about yourself and your own self-care, or they can be about what behaviors in relationships you will accept, which ones you won't be happy with, and which ones you absolutely will not accept.
Your boundaries reflect your values, your needs, and your wants.
Importantly, the consequences that come with boundaries are also about you and for you. Our consequences don't always change the other person's behavior, no matter how much we want their behavior to change, and no matter how much their behavior should change.
Importantly, the consequences that come with boundaries are also about you and for you. Our consequences don't always change the other person's behavior, no matter how much we want their behavior to change, and no matter how much their behavior should change.
I think the difference between a boundary and an ultimatum will be clearer if you can really think about these in terms of them being for you, by you, about you, and about you in relationships.
Consequences in Healthy Enough Relationships vs Toxic Relationships
In healthy enough relationships, the natural consequences of boundary violations might be enough to maintain appropriate behavior patterns.
In toxic relationships, stricter consequences are probably needed.
And in truly intolerable situations, ultimatums might be needed.
For example, if you're in a relationship with someone who is abusive to you or somebody who lies to you all the time, the behavior and maybe even the relationship probably feel intolerable.
In these situations, it is important not to threaten a severe consequence (eg the end of the relationship) unless you are ready to follow through on the consequence.
In toxic relationships, stricter consequences are probably needed.
And in truly intolerable situations, ultimatums might be needed.
For example, if you're in a relationship with someone who is abusive to you or somebody who lies to you all the time, the behavior and maybe even the relationship probably feel intolerable.
In these situations, it is important not to threaten a severe consequence (eg the end of the relationship) unless you are ready to follow through on the consequence.
IGenerally we feel ready to follow through with a severe consequence, when we are fully confident in our right to have this boundary, and we fully accept that we can't change the other person's behavior no matter how much you want to.
The Problem with Threats
In my 20 years working with people as a psychotherapist, what I observed—and I have certainly seen this in myself—is that we often use threats when we are exrtremely emotionally dysregulated. At these moments, we state what might sound like
an ultimatum, and we might even believe at that moment that we will follow through with it. But when we've calmed down, all the problems of following through with that threat become clear and we back off.
These threats can actually be very damaging both to ourselves and to the relationship.
The definition of a threat is actually a statement of intention to harm the other person.
We put threats out there when we're very hurt, angry, perhaps desperate. We desperately
want the situation to change, but it's not a boundary, it's not an ultimatum, and it's definitely not a consequence for a boundary violation.
Understanding Ultimatums: Final Demands
The definition of an ultimatum is a final demand or final statement of what you need (or the negotiating party needs), and the rejection of that demand will end negotiations,
It's essentially "THIS or no more discussion."
If that's the case, make sure for yourself that you're okay with that outcome.
Following through with an ultimatum might mean accepting a suboptimal outcome. It might not be the outcome you want, and that's why we often fall back into threatening and not following through.
Following through with an ultimatum might mean accepting a suboptimal outcome. It might not be the outcome you want, and that's why we often fall back into threatening and not following through.
Avoid the Zero-to-Hundred Trap
When you set consequences, it can be very helpful to start with natural and "in-between" consequences.
I see so much online where people go from zero to a hundred—either you get walked all over or the other person has to do exactly what you want.
I see so much online where people go from zero to a hundred—either you get walked all over or the other person has to do exactly what you want.
Usually, there's something in between. There are smaller steps to take. Boundaries are not a means to control the other person; they are not a means to win a power struggle.
Boundaries are meant to improve relationships if possible, and to keep you safe if it is not possible.
Boundaries are about trying to make a relationship safe and appropriate for the roles of the people involved—keeping the level of intimacy and interaction appropriate to those roles.
The Key Factor: Emotional Regulation
The most crucial element in setting healthy boundaries—whether they're simple boundaries or more serious ultimatums—is your own emotional regulation.
This is really the key to having healthy boundaries and knowing how to set them, express them, and enforce them.
Most of the time, it's not about what information you need or what boundaries you should set. While confusion can certainly come up because boundary-setting can be very confusing in many situations, it's more about the emotional response we have when we go to set these boundaries and the emotional triggers that might make us not do that well or fold and not do it at all.
I focus extensively on emotional regulation in my boundary program, along with how to set boundaries appropriately and enforce them effectively. The program addresses not just the mechanics of boundary-setting but the inner work needed to maintain them consistently. Information on the program is here: The Ultimate Boudary Course.
Moving Forward with Clarity
Understanding the difference between boundaries and ultimatums helps you approach relationship challenges more effectively:
Remember, healthy boundary-setting is a skill that improves with practice and self-awareness. The goal isn't to control others but to create relationships that honor your values and needs while maintaining appropriate connection with others.
I'd love to hear your thoughts on ultimatums versus boundaries. Do you have a specific example or question? Drop it in the comments below and I'll take a look—I might even create a video and blog about it.
Blog Author: Barbara Heffernan, LCSW, MBA. Barbara is a licensed psychotherapist and specialist in anxiety, trauma, and healthy boundaries. She had a private practice in Connecticut for twenty years before starting her popular YouTube channel designed to help people around the world live a more joyful life. Barbara has a BA from Yale University, an MBA from Columbia University and an MSW from SCSU. More info on Barbara can be found on her bio page.
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The main thing that drives rumination is actually the BELIEFS we have about the FEELINGS that come up from a difficult situation. Rumination is driven by the habitual patterns of thinking combined with our judgments about whether we can handle the emotions, both of which can be changed to experience relief.
You can probably recall a time when you were with someone who was intensely anxious—and within minutes, you began to feel anxious yourself. Perhaps your heart rate increased. Your breathing became shallow. The knot in your stomach tightened. Or maybe you remember the opposite: a time when you were with someone who was truly grounded and calm, and their presence actually calmed you down. Your shoulders dropped. Your breathing deepened. The tension you had been carrying began to dissipate. This is not your imagination. This is emotional contagion, and it is scientifically proven. Understanding how your own emotional regulation—or lack thereof—impacts other people, and how other people's emotional states impact you, is essential for healthy relationships. Learning emotional regulation tools can improve your relationships significantly. Learning how to lower your susceptibility to emotional contagion can help as well. In this article, I will explain what emotional contagion is, how it impacts relationships, and provide five specific strategies for improving regulation in your own relationships. What Is Emotional Contagion? Emotions are contagious. Extensive research—both behavioral research and neuroscience—shows that we pick up the emotions of the people around us. The closer our relationship with them and the more invested we are in that relationship, the more this phenomenon occurs. This may not always feel accurate because we also tend to balance each other out. If someone is very upset, we might suppress our own emotions in response. But as I will explain, that suppression is actually part of the same dynamic. Three Pathways to Emotional Contagion There are three pathways that lead to emotional contagion: Pathway 1: Automatic Mimicry Unconsciously, when we see facial expressions in another person, we mimic them. If someone smiles, we tend to smile immediately. If someone frowns, we might make the same expression. This happens not just with facial expressions but also with voice, tone and body posture. Pathway 2: Autonomic Mimicry This involves our autonomic physiological system which works in synchrony with other people. Our heart rate, our breathing rhythm, and even our pupil dilation tend to mimic each other. Our nervous systems influence each other constantly. Pathway 3: Affective Convergence This is the convergence of feelings. When our facial expressions and body posture mimic another person's, and our physiological system aligns with theirs, we develop the same affective feelings. We end up experiencing a version of that emotion ourselves. The Suppression Trap: Why "Staying Calm" Can Make Things Worse If someone is extremely upset, you might calm way down. If this happens almost automatically, you are probably suppressing your emotions rather than regulating them. Extensive research shows that when one person suppresses their emotions, it actually makes the other person more anxious. And the person who is suppressing—while they might appear calm externally - is experiencing all the physiological signs and symptoms of anxiety or a heightened emotional state. Even when we are trying to be the balance in the room, we might actually be escalating the emotions present. This is particularly true for those who grew up parentified. Adults who were parentified as children often feel their emotional regulation is better than anyone else's in their families. While that might be true to some extent, without substantial self-awareness and genuine emotional regulation tools, you are likely using emotional suppression, not regulation. Where Emotional Regulation Patterns Come From The means by which you emotionally regulate—and whether you are highly regulated or highly dysregulated—is largely due to how you were raised. I am not saying this to assign blame, nor do I want you to spiral into worry about what you may have done to your own children. These are intergenerational patterns, and all we can do is work with the present. However, it can help to recognize that if you feel your own emotional regulation is lacking, you probably learned from dysregulated caregivers. If you have a partner who is very dysregulated, the same is likely true for them. This understanding allows us to remove blame and accusation from the discussion. We can approach this with compassion, recognizing that these are skills that should perhaps be taught in school or more seriously in our society—but they are not. The good news is that you can learn them now. Five Practical Tools to Improve Emotional Regulation in Your Relationships It truly is possible to improve your own emotional regulation and have a postiive impact on your relationships. These tools are helpful even for the partner that feels they are the one who is more emotionally regulated. And as a heads up, Tools 1 and 5 require substantial work - but gradual improvement is helpful! Tools 2, 3, and 4 are easier to implement immediately. Tool 1: Develop Your Emotional Boundaries Because emotional contagion is so strong—particularly if you grew up in a caretaker role in your family—it is important to begin recognizing when the emotions you are feeling are the ones you are absorbing from someone else. Begin to visualize a see-through bubble around you which represents you and your emotional boundary. Begin to think of your emotions as existing within that bubble. And picture another bubble around the other person - give it a light, see-through color. Picture that all their emotions are within their bubble. Differentiate between what you are feeling and what they are feeling. Bring in your observer brain to look at what you are feeling. For example... "Wait a second. I am feeling anxious because my partner is anxious about their interview tomorrow. What is my anxiety about?" You can begin to see whether your anxiety is about getting them to calm down so they can perform well in their interview. Perhaps you don't want them to be disappointed, or you have a vested interest in them getting a job. Once you understand why you are feeling anxious, you can apply tools to reduce your own anxiety, rather than focus on theirs. Because if we get anxious about making sure someone else is not anxious, it simply escalates the anxiety in the room. Part of developing emotional boundaries is understanding that other people's emotions are not ours to solve. We can be empathetic without feeling responsible for calming the other person down or changing their emotional state. Your observer brain can help you think through, "I do not have to convince them. I can recognize the impact their emotional state has on me, but I do not have to spiral into desperately trying to fix something I cannot fix." Tool 2: Use Your Breathing Deliberately If you learn diaphragmatic breathing and use it during difficult moments in relationships, you can keep your physiology within a tolerable range. In EMDR therapy, there is a concept of keeping your emotions within a "window of tolerance." They can still fluctuate, but you remain relatively regulated throughout. Diaphragmatic breathing is a powerful way to help yourself do that. When you breathe in a calm, regular manner, it is actually helpful to the other person as well. Your regulated physiology can support theirs. Tool 3: Establish a Guideline for Taking Breaks Put in place for yourself a boundary about taking a break from a conversation if you become too emotionally dysregulated. What typically happens in couple relationships (and I saw this extensively during 20 years of couples counseling) is that one person is visibly out of control upset, and the other says, "We need to take a break until you calm down" (and there's usually a finger point that goes along with the "you"). Generally, this escalates the emotions in the room. In actuality, even if you are the one who appears less upset externally, you are probably very physiologically activated internally. There is a marriage and family therapist and researcher who has a rule: if your pulse rate is 10% above its normal resting rate ), you need to take a break. ( John Gottman, PhD, Seven Principles for Making Marriage Work ) The problem with telling the other person they need a break to calm down is that it will make things worse. It feels like criticism and attack. It makes someone defensive. It increases their fight-flight-freeze response. Instead, say: "I am having a hard time regulating myself in this moment. Can we take a 10-minute break? I will be right back. I just need 10 minutes to do some slow breathing. We can set our alarm." You must put a time frame on it. Take a five-minute break, a 10-minute break, or if you are extremely dysregulated, revisit the conversation in the morning. Without a time frame, the other person will feel abandoned, which escalates their emotional dysregulation. You may also be feeding into your flight mode—your reactive pattern of running away from conflict. Set the boundary for yourself, not for the other person: "If I get too upset, I will take a mini timeout to calm myself down." I recognize this does not work in every situation. You cannot simply walk away from a young child. But you can incorporate this thinking to develop creative strategies of your own. Tool 4: Validate Before You Fix or Problem-Solve One of the most regulating things you can do for someone else is help them feel truly heard. Acknowledging their emotional experience before moving to "let's fix this and problem-solve" will de-escalate their emotional response and prevent the conversation from escalating out of control. I know I said you are not in charge of their emotional regulation—and you are not. However, knowing strategies that benefit the relationship benefits you. These are basic relational tools. If you have a partner who has difficulty validating your emotions, and you are emotionally regulated, you can say: "I am very upset about this, but I do not want to jump into problem-solving. I simply want to feel heard." There is an element where we sometimes have to help train people how to be in relationship with us. If you are in couples counseling with a therapist facilitating this, excellent. But if you are not, sometimes it helps to explain these concepts to your partner. Let them know what will help you calm down when you are upset. You might have to remind them, and I know that takes substantial emotional regulation on your part. But honestly, that is the big picture here: the best thing you can do for your relationships with others—as well as your relationship with yourself—is learn emotional regulation tools. Tool 5: Practice Honest, Regulated Communication This can be understood as assertive communication that is also compassionate. If you are feeling overwhelmed, I understand. These concepts can seem complex and somewhat unattainable. I have an online boundary program that addresses emotional regulation as the foundation for healthy boundaries. It includes an exercise on visualizing emotional boundaries to strengthen that skill, and an entire section on assertive communication so you can set and maintain boundaries. Healthy boundaries are not about keeping people away or controlling other people's behavior. Healthy relationships actually require good boundaries. Good boundaries are about knowing yourself—where you end and the other person begins—and knowing it is acceptable for you to have needs. Compassionate, assertive expression of whatever needs to be communicated will help the relationship. It can be done in a way that supports your own emotional regulation and possibly helps the other person—or at minimum, does not contribute to escalation. Suppressing your own emotions and needs will escalate the negative cycle of conversation. This is not about suppression. It is definitely not about lashing out, exploding, or releasing everything you have been suppressing because you are angry and frustrated. If you have taken that timeout when needed, if you have been aware ("my heart rate is way up; I am in fight-flight-freeze mode"), you will not reach that explosion point because you will have taken your break and calmed down. All these steps are interrelated. Expressing what you feel in a regulated manner keeps you in connection with the other person. Remember: it is not just what you say but how you say it, and even how you are feeling when you say it. A statement like "I am feeling overwhelmed right now with too much to do" will enable you to stay in connection far more effectively than exploding because your partner has not done what they were supposed to do. Anytime we explode with attack or criticism, we contribute to emotional dysregulation in the room. Bringing It All Together Consciously keep track of your own emotional regulation Visualize your emotional boundary Use breathing techniques to stay within your window of tolerance, aware that you might need to take a mini timeout for yourself if you cannot stay within that window Validate the other person's feelings, emotions, and experience. Pay attention to: "This is me and my emotions, and that is them and theirs." Practice assertive communication which includes compassion for yourself and the other person This is not easy work. I know that. But what I want you to understand is that emotional contagion is real, and there are tools you can use to work with it. You can understand the other person without fully absorbing their emotional state. We are not individual emotional islands. Each one of us impacts those around us. Let me be very clear: Impacting others is not the same as causing their emotions or being responsible for their emotions. They are not responsible for ours. We are responsible for our own emotions and what we do with them. Yet there is this framework of interconnectedness among us, and knowing how to work with it can improve your life and your relationships significantly. Please share in the comments if you found this valuable. What resonated with you? What questions do you have?