It's a tough question to answer because I don't consider it a technique.

First off I am a morning person in so far as I don't hang about in bed once I am awake. (Most days 5 minutes before the alarm is set for at 6.10am) so I am generally tired in the evening anyway.

I drink lots of coffee all day long right up to going to bed. So I am not a good person to comment on caffeine as a sleep issue.

When I go to bed I read a book/basic kindle I probably last 5 or 10 minutes before I am drowsy. I close the book, shift to my default sleep position and shift my thoughts to one of a few meditations.

One meditation is really simple it is the warm up swing for a baseball game (I am a Brit and have never really spent any time playing baseball) Couple of practice swings and POW as the ball sails out of the park I am asleep.

Another meditation is to plan in simple terms the layout of a piece of land on which I am going to create my own little eden. I seldom get past the initial mental sketch of the key features.

I don't know why it works and why it is the same meditations it wasn't something I set out to develop. I do know that most people who complain about not being able to sleep are using screens too late and are often taking the worries of the day to bed with them.

I have a quite severe attention deficit issue and don't latch onto problems like that bed time is a blessed release from the chaos of my head during the day. One reason I wake so promptly is that once I rouse from sleep at any point my head gets going and if that is the middle of the night for any reason I have almost as much trouble getting back to sleep as is described by anyone who have trouble with getting to sleep.