I had issues with sleeping when others do for a long while. I do not anymore (although get out of sync again about 2x a year). 1. Caffeine and you: You have a certain sensitivity to this drug. You may also be misusing it. Generally speaking, it's a late morning, early afternoon only drug. Late morning is the only place it starts working as its an adenosine antagonist, and you don't start getting adenosine in any real…
Inapplicable for me - I often lie in bed for a long period of time with my mind buzzing about work/responsibilities/projects/news/... But if I read a few pages of a novel in bed, it shifts my brain right out of "active" mode into "sleep" mode, and I can fall asleep easily. Reading in another room involves climbing the stairs and puts me right back into active mode.
The important part is that in-bed activities prepare you for sleep, rather than encouraging wakefulness. (e.g., my wife will read to the end of the novel rather than going to sleep...)