insomnia again

I've been having trouble sleeping again. I can't get to sleep. The brain just seems to be tied up with something. Every night of the last four or five. I was up late Saturday. Then the time change shortchanged me a little. I slept kinda late on Sunday morning, so I couldn't get to sleep that night. Got about five hours of sleep. Then Monday night I thought sure I'd fall asleep instantly, but didn't. Got back out of bed and read for a while. Got less than seven hour, and am even more tired than yesterday.

I don't know what's going on. I need to work on the problem again. To go back and look at what helped me previously.