Obsessive Compulsive Disorder. There are little aspects about the world that makes me lose or disrupt my train of thought. My CD's, movies, and games must be in alphabetical order (multiple CDs by 1 artist are then alphabetized by album titles). The money in my wallet must be all facing the same direction and from smallest to largest. My pant leg must cover so much of my shoe. Stuff like that. I will stop ANYTHING I am doing to fix these problems.