About eight years ago, I made up a game called Avoid. Whenever a car drove past my house, I would have to either hide or freeze where I was until it passed. The game was addictive, and I started playing it whenever I was in my front yard. Now I can't stop playing it and I even have to freeze mid-sentence while explaining something to my father in the living room. When I vacuum I have to close the blinds so I don't get a freak attack by people in cars (I call them Suggests) who will come vaporize me if I move. It's all part of the game.
How do I stop? How can I not be afraid of the living room anymore? How can I stop rushing away from the window and how do I stop the feeling when I blasphemously DO move when a car passes? Is any of this at all normal?
How do I stop? How can I not be afraid of the living room anymore? How can I stop rushing away from the window and how do I stop the feeling when I blasphemously DO move when a car passes? Is any of this at all normal?

I suggest you start reading fantasy books. Begin with game of thrones...
I know you probably won't want to hear this but the way you can get over this behavior is by de-conditioning yourself. Make it a point to move when a car drives by. After a lot of practice, your body will begin to be more relaxed when cars drive by and it should fall out of habit eventually.