The overriding idea I'm hearing is that you should be relaxed before you lay down to sleep. I agree.
If you're taking the problems of a day/a life to bed with you, no wonder you toss and turn.
One of my buddies used to comment on problems in a unique way. His view was that all of the problems we face were simply part of the human experience that has recreated itself many times over the millenia. And as such, there is nothing you are facing that has not been conquered successfully before you came along. Quite astute for your average resident throttle jockey.
He used a wry smile and stated, "There is no problem that cannot be solved without a few pounds of high explosives."
As macho as it sounds, he was right. All of the problems facing you now will someday be the dust in someone's attic. That promotion, those missed deadlines, a scratch on your best 1,000 dollar sashimi, your lost earring--all will someday fade away.
When I retired, I took off my wrist watch and threw it up onto our living room credenza. There it sits in a pile of dust so thick it looks like a Halloween prop. I wish I could take credit for the idea, but it's the opening scene from "Easy Rider."
The issue here is I waited for too many decades. I was the guy who always arrived to everything ten minutes early. So what did it get me? Do you see a CMoH pinned to my chest? I worried for nothing. And I took much of that worry to bed.
My high school poetry teacher opined that 85% of the things we worry about never happen. I think he set the bar way too low. In my life, fully 95% of the problems that ruined my sleep never came to pass.