use your sleeping area for sleeping only. if you start hanging out in your room, watching tv, using it as a area for day time activities it can make it harder to sleep. I experienced this when i broke my back and spent most my time in my room during the day.
make sure your comfortable, i use a fan pointed strait at me, this way i can use blankets (i like the weight of blankets on me) and its a good source of white noise which i really need.
Another problem i have is sleeping in too late. once i can't sleep till 5am, i start over by getting up very early and going to bed at 10-11. then i slowly stay up later and later till i force myself to restart and wake up super early again. right now i have been up till 4-6am lately and getting up at 12-1pm...summer time parties lol
Tylenol PM works horrible for me, gives me restless legs
also, if im stressed about not being able to sleep, i wont be able to sleep. I som,etimes have to give up and turn on a movie, once im not worried about sleeping I usually pass out.