This is one of the most common questions people ask in therapy.

They know they should set boundaries, stop overthinking, leave the unhealthy relationship, start exercising, speak up for themselves, or stop checking their phone before bed.

They know.

So why is it still so hard?

The answer is that insight and action are not the same thing.

Understanding something intellectually happens in the thinking part of the brain. Change, however, often requires the emotional and nervous system parts of the brain to feel safe enough to do something different.

For example, someone may know they need to set a boundary with a family member. But if they learned early in life that conflict leads to rejection, criticism, or disconnection, their nervous system may react as though setting that boundary is dangerous.

The result is an internal battle:

“I know what I should do.”

“So why can’t I do it?”

It’s not usually because you’re lazy, unmotivated, or lacking willpower.

Often, part of you understands the change while another part is trying to protect you.

This is why lasting change often involves more than learning new information. It requires creating enough safety, self-awareness, and emotional regulation to help your nervous system tolerate doing something differently.

Knowing is important.

But healing often happens when your mind and nervous system finally begin working together.

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This column is for informational purposes only and is not a substitute for professional mental health care. Reading this does not create a therapist-client relationship. If you are struggling with anxiety or another mental health concern, please reach out to a licensed professional in your area for support.  If you are in crisis or thinking of harming yourself, please call 988 in the U.S. or go to your nearest emergency room.