If I think I'm going to have problems going to sleep I take a muscle relaxant but they're tiny. It relaxes me just enough to drift off to sleep. The first time I took one, I slept all night and all the next day and missed all of my classes! D:
But now it makes me have a wonderful nights sleep. I try not to take them too often though, because I'm trying to teach myself how to go to sleep by myself :P
Obviously I have not taken one tonight or I wouldn't be up.