Have you ever caught yourself reacting in a way that feels bigger than the moment? Maybe your chest tightens the instant your boss emails you. Maybe Sunday afternoons bring a familiar heaviness. Maybe a loved one’s tone makes you feel defensive before you even know why. It can be easy to think, This is just who I am. But often, that is not the full story. Many of our emotional and physical reactions are shaped by patterns our nervous system learned a long time ago. These responses are not random, and they are not signs that something is wrong with you. They are...