I don't know why, but lastly I can't control and stop my thinking. It's like my brain thinks against my will and I can't control it. I'm afraid that if I keep on like that, I will finally run out, and get some kind of brainy diesease like Alzhaimer or any others. I'm thinking even when I do excercises, take a shower, am in the school, just everywhere. In addition, this thinking, is usually something I already thought about before, so basically there is no reason to think about it again. I also tend to think about thinks that aren't important at all or are pure imagination, and whenever I try to stop thinking it rapidly comes back without me asking it to come back. Thinking a lot and about everything used to give me a lot of pleasure, but now it's very unpleasurable, and not comfortable. I want to stop! Help...