I don't really know why with such little and vague information. I know mine come from the fact that i'm going through a huuuuge upheaval and turning point in my life so i'm awake all night thinking about everything that is stressing me out and analyzing the decisions i'm making and if they're the right things. knowing what i WANT to see happen but doubting that they actually will and well, my head is a gigantic mess. especially at night time when I want to sleep and can't because my mind is restless and there is no one around to talk to.