Ever since my teens I considered sleep the most difficult thing in my life, and the most detrimental to my health. For me falling asleep has been a difficult assignment that usually takes 1-3 hours. It's been a negative feedback loop where when I am tired I lose discipline and stay awake longer, which makes me even more tired the next day, which makes me stay awake even longer. It makes no sense at all and frequently throws me in bouts of grogginess that last days.
It's been that way for more than ten years now, and I've read and talked a lot about sleeping but nothing ever made me get rid of this problem of not being able to fall asleep. A couple of weeks ago however I read two HN articles that together seem to have finally given me some grip on falling asleep more quickly (i.e. in less than 1 hour).
Reading back that last paragraph makes me feel like I'm about to introduce a "doctors hate this one trick" product.. Anyway, the first article is the one about WW2 pilots having to fall asleep in two minutes:
https://www.artofmanliness.com/articles/fall-asleep-fast/
The key takeaway from that is kind of obvious, but it's nice to be made conscious of it, and that is that it's important to actively make yourself relax. Relax both your muscles, and your mind.
I can't seem to find the second article, maybe it didn't have sleep in the title or something, but it was the missing link for me. The article was a little bit controversial because it had a linkbaity title implying sleep is not important. The main point of that article was that since stress and stressful thinking inhibits sleep, you sleep better if you don't worry about sleeping. It's the old ice bear problem, you have to sleep, but you're not allowed to think about having to sleep.
I combined those two articles into a simple strategy that seems to be fairly succesful so far. First step is to get into a position where all my limbs are relaxed, and I actively relax my body.
The next step is to stop my mind from racing through the realization and acceptation that the most important thing right now is to sleep. That means that my ideas are unimportant, that my organization of tomorrows tasks are unimportant, that sudden realizations are unimportant, that nothing matters, not even falling asleep. I kill any brain activity with "it doesn't matter", almost as a mantra. When something pops up in my brain, I force myself to think "it doesn't matter" and cease working on the idea.
Maybe it sounds a bit silly, but I think it might help someone in the same situation as me. I think I let myself feel my thoughts were important for too long. I really enjoy thinking about how to do things, and apparently it's become a point of discipline to make myself stop thinking about things.