FluffyDinosaur said: "I've tried all the usual sleep hygiene rules in the past, but it never really worked for me. It just made me more obsessed and anxious about getting sleep. Instead what helped me more than anything was to let go of the fixation on sleep hygiene and just generally stop caring too much whether I sleep or not. Obviously I still avoid stuff like caffeine and screens in the evening and go to bed at more or less the same time every day, but other than that I just think, sleep or no sleep, whatever. I still have insomnia a lot, but it's better than it was, and at least I don't have as much anxiety about sleep anymore."

I've had some success in the past with this, too. Just saying, "Whatever, if I can't sleep now I suppose I'll sleep some time; I'll just lie down a few minutes and rest my body anyway." Sometimes that was the last I heard from my conscious mind for many hours.

Right now, I'm relying on medication; I got into a spell of very severe insomnia from quitting 100% of the pills.