Light sleeper..

I don't know why but I am and have been since late teens, a very light sleeper. Any noise, light, movement, etc will wake me up and I find it hard to get back to sleep again. Maybe it's a bad habit but one that has proven hard to break. The more I tell myself to don't care the more I do. Nowadays going to sleep is even a problem. And I've always had this, I don't know if anyone else has: If I don't go to sleep almost immediately when my head hits the pillow, and I start thinking and stuff and end up tossing and turning then I will not get good quality sleep! It's just weird..sigh.