I know this sounds weird but I used to have this obsession with constantly thinking about how I react, respond, how my facial expressions look and my mood. It was almost as though I developed this paranoid obsession with trying to control my behavior to a specific way so I acted normal (whatever the hell that was).  mostly all my thoughts were being used to alalyze myself and I could only think freely for a few seconds and then back to myself and back and forth all day with about 30 mins an hour break when I got home. I was so hyper aware of every thought I had and everything I did, how looked in certain cloths, how my behavior, thinking and facial expression changed when a certain song or genera of music would come on.... I have been on anti depressants for about a year and it finally has gone away. I NEVER had this before anti depressants. Or maybe I did and i wasn't aware of it or how present it was in my daily life? who knows..