Last updated November 5, 2026
A message comes in from someone you care about. It says, “Can we talk later?”
On one day, you think, Sure, I wonder what’s up. On another, your heart speeds up and you reread the message looking for clues. Or you go blank, set your phone down, and find it hard to get back to what you were doing.
Same message. Three different experiences.
The window of tolerance gives you a way to understand those shifts. It can also help you answer a more practical question when you feel overwhelmed or far away from yourself. What kind of support might help me right now?
Photo by Marcos Paulo Prado on Unsplash
What is the window of tolerance?
Developed by psychiatrist Daniel Siegel, the window of tolerance describes the range of nervous system activation in which you can stay present enough to think, feel, and respond with some flexibility. You can be angry, sad, or nervous and still be within your window. You might feel hurt in a conversation and still be able to say, “I want to talk about this. Can we take a minute first?” dodd.ohio.gov
When activation rises beyond that range, you may feel on edge or overwhelmed. When it drops below that range, you may feel foggy, heavy, or disconnected. Some people recognize both in the same situation. You might start an argument talking faster and trying to explain yourself, then suddenly lose your words and want to leave the room. dodd.ohio.gov
A 30-second check-in.
Think of a recent, manageable moment when you got tense or checked out. What was the first clue? Maybe your sentences got faster, you stopped taking in what someone was saying, or you suddenly wanted everyone to leave you alone. That early clue gives you something specific to look for next time.
Get the free My Window of Tolerance handout
Fill out the form below to get your immediate download with the three zones at a glance and make a simple map of your early clues and what helps you feel more present. Print it for yourself or bring it to your next therapy session.
Why can a small moment feel so big?
What you have room for can change from one day to the next. After a poor night’s sleep or a day full of noise and demands, you may have less capacity for a conversation that would ordinarily feel manageable. Trauma can shape which cues feel especially charged. If someone’s silence once meant you had to brace for what came next, a long pause from someone you love may feel loaded before you’ve had time to consider what’s happening now. OLCreate
From an Internal Family Systems (IFS) perspective, I might get curious about the part of you that needs an answer right now, or the part that goes quiet as soon as tension enters the room. What does that part expect might happen? What would help it feel supported? Those questions can make room for compassion in a moment when you might otherwise be hard on yourself.
Try one small thing that fits how you feel
If you feel on edge, try reducing one demand
Turn down the background noise, set the phone face down, or give yourself permission to answer later. In a conversation, you might say, “I want to hear what you’re saying. I need a minute so I can take it in.”
If you feel foggy or far away, try a little movement or sensory input
Press your feet into the floor, take a few steps, or put on a familiar song. If paying attention to your body feels uncomfortable, look around and find one object you can describe by its shape or color.
If you feel present enough, notice what’s helping
Maybe you think more clearly when you walk side by side with someone. Maybe a quieter room or a little more time between appointments gives you room to hear yourself think. What helps when you already feel steady can give you ideas for harder days.
After you try something, ask, “What shifted, if anything?” Maybe your jaw softened, or you could follow the next sentence. If the room is still too loud or the conversation still feels too pressured, that information can help you decide what you need from the situation or the person you’re with.
Can your window of tolerance expand?
Over time, with support that fits you, you may find that you notice the shift earlier, stay connected to yourself a little longer, or recover more easily after a hard moment. In everyday life, that might look like asking for a pause before you go quiet or having enough room to say what you meant after a misunderstanding. rcpsych.ac.uk
In my IFS-informed EMDR intensives, we spend time learning what overwhelm and shutdown look like for you and how to recognize when you’re nearing your limit. That helps us decide together when to slow down, when to pause, and when you have enough room to approach a difficult memory. Many of the adults I work with already understand a great deal about their history. Part of our work is helping them stay connected to themselves when those old patterns show up in the present. IFS EMDR Therapy
If you’ve done meaningful therapy and want more concentrated time for this work, explore IFS-informed EMDR intensives. If you’d like to talk through whether an intensive fits where you are now, schedule a free consultation.
More Reading:
Why We Use IFS-Informed EMDR: A Gentler, Deeper Path to Healing
How to Know if an EMDR Intensive is Right For You
About the Author
This post was written by Morgan Levine, LCSW, a licensed trauma therapist in Maryland, Washington DC, Virginia, Pennsylvania, and Colorado. Morgan specializes in IFS-Informed EMDR and EMDR Intensives—including in-person immersive retreats and virtual multi-day formats in Chester County, PA and Tulum, MX.
She helps adults who feel “stuck” in therapy find deeper, lasting change by addressing the roots of perfectionism, overworking, anxiety, depression, PTSD, ADHD, obsessive or compulsive patterns, attachment wounds, and complex or single-incident trauma.
Learn more at ifsemdrtherapy.com/emdr-intensivesSEO Keywords:
Window of Tolerance, Therapy, Trauma Therapy, Complex PTSD, Nervous System, Sympathetic Nervous System, Regulated, Dysregulated
