Insomnia strikes again, help? At least two times a week,  I go through these periods where, even if I feel tired, I simply can't fall asleep, and end up spending at least an hour limply laying in bed, then I end up going online or doing some homework, or whatever.  The general problem seems to be that I experience metacognition (thinking all the time) about random bullshit, and it keeps me up.  It ends up hurting me a little during the day...I get a little ornery, and my concentration gets a little fuzzy.   It's been going on for maybe six months.   Should I get some over-the-counter sleep aids?  Know any home remedies?  Thanks.

P.S.  Physically, I don't think it's doing much.  Maybe some bags under the eyes...here's a pic: 

http://360.yahoo.com/profile-R9hvs0A4dralQy1R1e8Lx6u98gLjrZ6AIPBcA9WvsCY-

Do I look sleep-deprived?  What should I do?

Summarized question: Are there any good home remedies for insomnia?