Understanding the Window of Tolerance: Why Therapy Sometimes Feels Hard
Sometimes healing feels harder than we expect. You sit down in therapy, determined to work on yourself, and suddenly you feel overwhelmed by emotions—or, on the other hand, you feel nothing at all. That’s not failure. It’s your nervous system doing what it was designed to do: protect you.
Trauma therapists refer to this as the Window of Tolerance, a concept developed by Dr. Dan Siegel. You can think about it as your target emotional zone. Our goal is to keep you on the right target- the place where you can safely feel and think without being knocked out by overwhelm or shut down completely when triggered, or stressed.
What Is the Window of Tolerance?
Your brain and body are designed to help you avoid danger at all costs. When the brain and body believe it is in danger (even if it's not accurate) to protect you, your nervous system will automatically kick you into one of these areas:
- Hyperarousal (too high, aka fight/flight): Anxiety, catastrophic thinking (like something bad will happen), sleep issues, thoughts won’t stop racing, irritable, restless, can't focus, you overwork to avoid feelings. You may look driven and productive, but it's fueled by fear/stress. May experience tightness in the chest or shoulders, tension in the jaw, stomach, back pain, or other areas of the body, or pain.
- Hypoarousal (too low, aka freeze/fawn: You feel numb, detached, stay in bed longer than you want to, avoid calls, procrastinate, shop/drink/smoke to escape feelings, check out emotionally when things get hard, or feel emotionally detached. Avoidance of trauma themes, focusing on others instead of self, and long silences. Smiling, agreeable, still "on top of things" outwardly - but internally disconnected and drained. You often hear yourself saying, "I don't know" or "it is what it is." Typically experience brain fog, fatigue, and difficulty moving.
- Window of tolerance (Target Zone): You feel grounded, calm, and can manage stress. You can experience insight without intellectualizing, and emotions are expressed without overwhelm. You can maintain a relaxed posture and breathe more slowly, with a willingness to be present and feel.
Most of us have a small window of tolerance—our systems get easily kicked out by stress, triggers, or old trauma patterns. One of the goals of trauma work is to keep you in that target zone where you function the best.
Why Trauma Makes It Harder
When you’ve lived through trauma, your system becomes more alert to danger. Even when the threat is gone, your brain and body act like it’s still here.
That’s why:
A simple sound in the night might jolt you awake like an alarm.
Raised voices can make you shut down instantly.
You swing from overdoing (hyperarousal) to avoiding (hypoarousal).
Neither response means you’re weak, broken, or not normal. They’re built-in protective strategies your nervous system uses to keep you safe.
Why Good Trauma Therapy Matters
Jumping straight into “tell me what happened” can push you outside your window and leave you feeling worse. Good trauma therapy starts by helping you build the skills to stay in your window so you can actually process what happened without retraumatizing yourself.
Think of it like the gym—you can’t expect to lift 20 pounds the first day. You build strength over time. In therapy, we build your emotional muscles: grounding tools, coping strategies, and increasing awareness of your own patterns so you learn, "oh, this is my system telling me I'm out of my window."
That way, when you’re ready for deeper trauma work, you are more aware to handle the shifts that can occur.
How EMDR Therapy Fits In
Talk therapy helps you develop insight and coping skills, and can provide new perspectives on challenging experiences. But sometimes, no matter how much you talk, you still feel reactive, triggered, or easily pushed out of your target zone.
That’s because some things are still tucked deep in your “closet,” and traditional talk therapy can’t always access them.
This is where EMDR therapy, or for those who don't have a lot of time for therapy, or need to work through specific stuck points, EMDR Intensives comes in. With EMDR, we help your brain safely reprocess old trauma so it stops hijacking your present. You don’t have to relive everything—you learn to face the memories without being knocked out of your window.
Signs You Might Be Outside Your Window
Feeling on edge or easily startled
Snapping, yelling, or becoming defensive
Shutting down, avoiding people, or withdrawing
Trouble concentrating or making decisions
Feeling “too much” (flooded) or “too little” (numb)
Struggling with sleep, nightmares, or physical tension
Shame about how you react under stress
Building Your Window: Self-Care & Awareness
You can learn to expand your window of tolerance. Start by noticing:
- What zone am I in? (Too high, too low, or balanced?)
- What do I feel in my body? (Racing heart? Heavy numbness?)
- What am I thinking? (Am I catastrophizing? Am I disconnected?)
Take notes on the Window of Tolerance Worksheet HERE.
Simple practices to reset:
Grounding exercises (naming five things you see/hear/feel)
Movement (walking, stretching, dancing)
Breathwork or prayer
Time in community or play (yes, joy is regulation too)
Retreat with intention
Every person’s “reset list” looks different. For some, it’s running, for others, journaling, organizing a closet, or spending time with people who feel safe.
EMDR Intensives: For Deeper Work
If you’ve been putting therapy off because you “don’t have time,” or if you feel stuck in the same patterns even with talk therapy, EMDR Intensives might be right for you. They give you focused time to build skills, stay in your window, and finally process what’s weighing you down.
Learn more about EMDR Intensives here
Next Step: Try This Awareness Exercise
Want to get started today? Download my Window of Tolerance Worksheet—a simple guide to help increase your awareness of how you respond to emotions so you can map out your own zones, notice your triggers, and practice strategies to expand your window. It's a great tool to review with your therapist.
Final Thought
Understanding your Window of Tolerance or how you respond to emotions gives you language for what’s happening in your body and mind. With the right tools and support, you can widen your window, build resilience, and navigate life with greater calm and clarity.
Ready for Trauma Therapy or need a new Trauma Therapist in NYC?
At Kensho Psychotherapy in Lynbrook, we have virtual and in-person appointments serving the NYC area. Booking details can be found here.
Question for you: Which part of the Window of Tolerance do you most relate to right now—the “too high,” the “too low,” or the target zone in the middle? Or what did you find helpful about this piece? Leave a comment for us!






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