The other day my boyfriend and i were in the car, he couldn't start going because there was a dog right behind our car, so i rolled down the window and told the little fella to get out of the way. He moved and just as i was rolling the window up i saw a guy staring at me. Turns out his car was parked right by ours, so he had to wait for me to get my damn head in the car to get in his. His movements and mimics assured me that he wasn't liking this, so i went spiraling like "did he think that i was being rude to the dog? If so, i was not. But is he gonna believe that? Screw him. Maybe he's just mad that he had to wait. He waited like 15 seconds. Maybe he would have preferred to just kick the dog. If so, fuck him!" 


As I was trying to figure out why the guy hated me and what i did to deserve it, my boyfriend turned to me and said "that man clearly had a dog. He seemed  like he understood dog-related stuff." 

This happened to me the other day, but i still can't forget it. It sure could be him, or us both who interpreted the situation wrong. But this always happens to me. I tend to think that everyone is "out to get me." When I'm walking down the street, I almost analyze the passersby to find a crumb of hostility, which i eventually do find. Going out to meet someone usually requires me to put on a heavy armor - cold eyes, tight and always neutral mouth, dead stare. Combined with the way i dress agressively, i apparently do everything to make people believe I should be avoided to fight. This is everywhere in my life, which leads me to the fact that my brain is constantly in danger mode. 

Now my question is, how to shut this down? I don't look for ways to cope, because I've been coping with it so well that I haven't realized that this isn't normal at all, until recently. Is there anyone who can provide me with some info or experience on this?  I can only self help right now. I'm currently doing some DBT workbook. Thanks in advance.