If you are wary of drugs and now ready to try anying. Try this. Listen to this medidative audio on sleep. Plug in a pair of headphones, in a quiet place, with dim lights and in comfortable clothes. Make sure it's in a position where you are ready to go to bed and not where you are going to go brush your teeth, do a million other things, too.
Play this audio and clear your mind and see if it doesn't help you relax your mind and give you the opportunity to get all the day's worries cleared and free you to go to sleep.