I don't know if you've tried any sleep-aids but I use Melatonin on occasions. It's all-natural over-the-counter. It seems to work pretty well for me most of the time and I definitely prefer taking it over the Ambien I was perscribed as that can easily become habit forming itself.
Unfortunately I'm all out tonight lol. It's about 4am where I live still wide awake watching a movie. Probably still be up when my younger brother and sister head to school.