I've always liked staying up late, and as a consequence having trouble getting up in the morning. Even as a kid I was reading under the covers with a flashlight, and then a slug in the morning. As an adult, I mostly worked evening or midnight shifts, which worked out fine.
Now, at the age of 78, unfortunately, I am having a health problem directly related to not getting enough sleep. I go to bed at 2.00, and get up at 7.30 ... I'd often like to sleep in, but I hate starting the day late, and the pussycat wants breakfast.
So, I gotta start going to bed earlier. And go to sleep, not just toss and turn. Even going to bed at 2.00, it sometimes takes a while to fall asleep.
I have all the obvious sleep habits... routine, dark room, quiet, etc etc. It's gonna be interesting, trying to change the habit of a lifetime.