How do I calm down? Im desperate!?

Well I can relate very well to you. I am a 13-year old Boy with the same problem. Mainly what I do is playing video games which usually keeps me calm. Also I always have a .50 Cal bullet that I play around with. kind of keeps me busy. Get something like a Video game or just surfing the net or a ball or something to keep you busy. Also I am a HAL/GLaDOS Fan and i usually find myself reapeting "Just what do you think your doing dave" or "well you found me congratulations" in public. I usually find something to keep me busy. As for sleep I just think about my favorite things