I definitely relate to the difficulty of sleep problems. Mostly I've slept well in my life, but when I've had a hard time, I found it torturous for sure.
Awhile ago, when I was waking up too early and not able to go back I decided to implement some changes advocated by a neurosurgeon whose work I read regularly.
It basically involves resetting your circadian rhythms so that light and dark are powerful signals for the brain (as they have been, evolutionarily). After dusk, you dim lights, and slow down and stop screens pretty soon (so that it's not "no screens a half hour before bed" but no screens a couple hours before bed). So, unless you're near the equator, this is going to mean shorter days in the winter and longer in the summer. I've actually changed some of my light bulbs in the rooms I use at night (including bathroom) to red LEDS, so when I am in there, I get no blue or green light telling my brain it is daytime. Your eyes are very sensitive and can detect the presence of a single photon, so I got the best effect with no blue/green light fairly soon after dusk (an hour or so) rather than dimmed lights, but at least substantially dimmed lights are a start.
Eat a large, proper breakfast as soon as you can in the morning (I aim for 30-45 mins of waking), which also signals your brain that it's daytime. Likewise, try and finish your last food several hours before bed.
Within a couple of days I found the effect almost unbelievably miraculous, given that I thought I needed drugs when I was sleeping poorly. I was yawning and utterly ready for bed at 9:30 pm in the winter (our days are very short in the winter in the UK), and waking up at 5:30 and 6:00 feeling totally refreshed and happy to get up.
Circadian rhythms affect almost every process in your body, and a lot of crucial cellular "clean-up" work happens at night, so bad sleep has more effects than just misery. As simple as this is, this is pretty cutting edge thinking in science, and there is a lot of work being done right now to establish the various effects of disrupted circadian signaling.
I admit it's a real psychological hurdle to give up screens like that when we are so habituated and go for a super early bedtime - I was very resistant, and I knew about this thinking a couple of years before I finally bit the bullet - but I think so much is just pattern to humans, and we adapt quickly. Now, if we have to turn a dim white light on at night in my house for some reason, I find it very grating, and instead find the red light soothing, and sleep beautifully. Just thought I would tell this story for the more adventurous and/or desperate of you out there.
