Doxylamine
"I have had sleep disorders all my life since I was about 12. I am now 60. I have sleep apnea and have been using a sleep machine now for 10 years. I too am a worry wart and when my cortisol kicks in, I'll go for weeks without sleep. I've  always used over the counter sleep meds 25mg. Doxylamine off and on for 25 years afraid of addiction to them. I FINALLY asked my doctor about the usage and he gave me 100% ok on this stuff. Now I take one pill every night- get my 8 hrs, which is a new and wonderful experience for me! I prefer taking a little blue pill every night, and sleeping  great than to spend one more night awake.  I can only recommend doxylamine. Much less dangerous than taking prescription drugs for sleeping."