I always got racing thoughts keeping me from falling asleep so i have to stay busy doing something... like getting on the internet with my cellphone and reading thru all the real old DGN threads (such as this one) until I finally can no longer keep my eyes open, then pass out.
The strange thing is that if I start getting tired then log off the net and put my phone down, I suddenly won't be able to sleep again. I have to keep my mind occupied until I'm exhausted enough to pass out. Watching T.V. works well too, but lately I've been deep sea diving for DGN posts of the distant past as a way to stay busy until I can fall asleep.