What do you do when you can't sleep?

In the end of high school and first year out of high school, I had a lot of trouble sleeping. Problem was, I couldn't get up to do anything because my stepdad was a huge hardass, and many times demanded that I go to sleep way before I ever intended to.

Since going to school, I've had little sleeping problems, but if I DO have trouble sleeping, it's usually the result of some sort of...psychological issue bothering me, or numerous ones that sort of build up and bother me. Then I can't stop thinking about them.

So usually, when I can't sleep NOW, as a free adult, I just browse the internet or watch a movie or something. Sometimes I write, which is when I'm glad I can't sleep. I actually get some work done, feel a sense of accomplishment and rest well. When something is intently bothering me, I've been known to write hours-long blog/rants or six pages or more, post them and then delete them not long after, due to being rational in the morning, or after I've vented.

Jam it back in, in the dark.