hello morethingswrong,
you sound a lot like me. My first psychiatrist used to say i overthink too much which i agree. I would dwell on things and they would consume my thoughts for days sometimes. I worked through this in therapy and it has helped quite a bit. Also I went through a very serious bout of anorexia in my early teens. It's been many years since I have recovered from anorexia but the self loathing is still there in the back of my mind. I currently don't have a therapist just a psychiatrist. I'm working on getting a new therapist.