Tense because of work and your job search? The comments on this article list a lot of real ways people get to sleep.
My most effective way to get to sleep is to count to 2. In my head I lie down and count 1-2-1-2-1-2-1-2….. until I fall asleep. If I count any higher it takes enough mental energy that it keeps me awake. Counting clears my mind and lets me rest.