I wake up frequently in the wee hours, usually 2-3 times between 1AM and 4AM. I do go to bed very early (9PM) because I get up at 5AM. When I wake up too early, I think about anything but my problems. If I start thinking about stuff I'm worried about, I try to redirect my brain. I write stories, so I'll work on a plot in my head, or plan what I want to wear in the morning, or how I want to play a certain scenario in a game or two I like - anything but something that is bothering me!