Whoa, thanks for the replies, everyone! After I posted I went and took a walk. Decided to come back home when I found I was in town ~8 miles away. Oops.
I'll go down the list.
Chocolab- You're not the first person to suggest melatonin. I might give that a shot, especially with what Sub Umbra mentions.
Alin- Afraid that was one of the first things I tried. Thanks anyway.
Trashman- I'll give Carrot juice a try. Have to take a trip to NY and get a bigger juicer. Who wants his A2?
Verbie- I exercise almost religiously, in the early evening, just before dinner. During the winter that means walking or bike riding. During the summer it's the hottest part of the day, so I use an exercise bike in the air conditioned bedroom. Sometimes I'll hang a punching bag in the garage.
Lightmeup- I've cracked a window during the winter, it's made no difference. During the summer it's too effing hot to defeat the air conditioner like that.
Chrwe- You may have something here with the stop thinking part. Usually I can will myself to quit thinking and it works just fine, sometimes my g/f has to help. She's very good at being distracting. :devil: Sometimes it doesn't matter, I quit thinking and I'm still wide awake. I keep a fairly regular schedule, but sometimes it's just flat impossible.
Sub_Umbra- That's all good advice, and all things that I've done before. They certainly do help. I'm out of town and there's no street lights or anything out this way. The master bathroom is right off the master bedroom, and I get there in perfect darkness. There's a small EL nightlight in the bathroom; I don't turn on the main lights. I prefer to keep the house dark and have always done so, even though my g/f complains. I've been keeping a sleep log for a couple years now, so far neither I nor my doctor can come up with any kind of pattern, but I keep at it in hopes that it will help. It certainly won't hurt!
Brighteyez- I've already seen my GP. Several times. I do indeed have clinical depression, among several other health issues. She suggested I see a psychologist, it wasn't my idea.
I think that's it. Again, thank you all. After I posted, I thought about all the other people who have such drastic problems and felt like a damned idiot posting about not sleeping, but thank you all for the advice. I'm definitely going to try a few new things tonight.
Cheers. :buddies:
Edit: I also completely cut caffeine out of my life for about three months, made absolutely no difference. Amazing just how much stuff has caffeine in it.