I am a nurse, so by law I always start by saying "go see the doctor" BUT you can try benadryl too. It knocks me out cold when I can't sleep. I have had the very same problem you are having since I was like 10 (now 32). Everybody else in my family could lay down in the middle of the road and sleep day or night. I have some OCD issues and think that has an effect on me. I have also noticed that when the time changes and I am not out working my A$$ off all day I get very NOT NICE and cannot sleep or anything for days. The Tylenol PM is just Tylenol with Benadryl in it so get a cheap bottle of benadryl and take you a swig bout an hour before you want to go to sleep.