10/13/2026
Have you ever wondered why some days feel manageable and others feel like too much?
For so long, I operated outside of my window of capacity. I lived in constant stress, which kept my nervous system on edge or in a full-blown stress response. Occasionally, I felt connected and content. Most of the time, I felt depleted and disconnected while also feeling frustrated, overwhelmed, and angry. My capacity was very limited, and it was taking its toll.
The window of capacity, which is also known as the window of tolerance, is not fixed. It expands and constricts for countless reasons, like how rested, supported, and safe you feel on any given day. Your system alerts you to low capacity in many different ways, including snapping, spiraling, going numb, and disconnecting. Many of us label these signs in a negative way instead of viewing them as information about what your system needs.
Pause for a moment and check in with yourself. Notice whether you feel above, below, or inside your window of capacity right now. Whatever you find, consider one small thing that could help you move back toward center, such as a slow breath, a few minutes of quiet, setting a boundary, a walk, or a conversation with someone you trust.
Sometimes a child isn’t “being difficult”.
They may be above their window of capacity: overwhelmed, angry, noisy, tearful, restless, unable to take in another word.
Or they may be below it: quiet, numb, shut down, exhausted, staring into space, saying “I don’t know” to everything.
Both can look like poor behaviour from the outside. But often, it’s a nervous system that has had too much.
In those moments, explanations, consequences and “calm down” can feel impossible to hear. Start smaller. Lower your voice. Reduce demands. Offer a drink, a snack, a familiar routine, a bit of movement, quiet company or space nearby.
The goal isn’t to make a child behave perfectly. It’s to help them feel safe enough to come back to themselves.
And if you’re a parent running on empty, this applies to you too. Nobody can cope well when their capacity is gone.
FREE WINDOW OF CAPACITY POSTER FOR EMOTIONAL REGULATION
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