Every night I stay up past 12 , past 1 , etc . Not because I'm not tired . Not because I want to tweak on these social networking sites . Because I am tired , I want to sleep . But I can't because my mind runs like crazy . It over thinks , over analyzes things that I don't want to think about . So , I purposely keep myself awake and tire myself out so that when I do finally lie in bed , i fall asleep and my thoughts don't keep me up .