Have any of you been in a happy mental state and then, all of a sudden, you start getting negative obsessive thoughts? How the fuck do I prevent this from happening? For the last two months, I've been chasing this cute coworker. Finally, she's been displaying signs of interest. Of course, I'm happy about it. But then suddenly, I would start thinking negatively and obsessively. I would think she's too good for me, that I'll eventually get dumped or used or whatever. These thoughts come out-of-the-blue and I'm afraid it will sabatoge my chances with this chick by causing me to do something really stupid. My brain does this whenever I enjoy some initial success with a girl. I bet it's a defense mechanism. Because of my past shitty experience with women, my brain is trying to sabatoge things so that I wouldn't get hurt down the line if I ever get hot and heavy with this chick. Are there drugs for this sort of thing?