> 2) How do people just "go to bed" early because they get bored? I'm actually jealous of that idea. If I just decided to "go to bed" early, it would most likely involve me staring at either the ceiling, my phone, or a book for a few hours.
I did a no electronics and no electric light after sundown thing for a couple weeks. Lived after-dark hours by a couple candles—found two beeswax tapers are about the smallest amount I could comfortably read by, assuming they were close, though unshaded looking at them directly by accident and being blinded/feeling eye-pain was a real problem. Beeswax because once you notice how chemical-spill-smelling the cheap parafin ones are you can't un-notice it.
I went to bed way earlier than I would have otherwise, during that time, and generally much better rested than usual. I think it was a combination of the lower light and the lack of hyperstimulation from having a world of audio-visual, passive and interactive, entertainment at my fingertips. I'd usually read for a while then turn in, not because there wasn't more I could do (there's always more to read) but because it was just time to sleep and because I didn't have a friggin' carnival going on in my house I actually felt that.
I'd thought my whole life I was a night owl, but now I'm pretty sure 90%—or more—of the "I just can't sleep at night, it's how I am" stuff you read on here and other places on the Web is the same problem I (actually) had/have: our houses are friggin' amusement parks complete with incredibly bright lights, so we're constantly hyper-entertained and hyper-distracted. Of course we can't sleep! We've got more and better entertainment than a damn Emperor's celebratory feast would've in yester-year—with the relative plenty in food and drink to match, I might add, should we desire it—and it's on tap, in our homes, 24/7.