Nothing helps much. You can see my med list in my signature. I am dividing my valium in half, half taken when I start to relax and half when I start to get sleepy. That sort of works.
I sleep under a 22# weighted blanket; that has made a huge difference overall in sleep, just not when I'm feeling really bad. But the difference in overall sleep since I got it 10 years ago and now is amazing.

I've tried every sleep hygiene thing there is and none of it works. Sometimes white noise helps but not usually.

The best way for me to sleep is to babysit my nieces. It means 4 hours of driving and 8 hours of taking care of a 4 year old and a 1 year old and it usually knocks me out better than most anything else. (I think it's mostly the driving).

Seroiously read about weighted blankets. THey are pricey but last seemingly a long time (mine was about $200 with free shipping (important with the weight) and is 10 years old and has been washed many times and is still in great shape.)