I'm in a period of insomnia right now, too -- maybe the solstice is affecting us?
Things I've tried:
1. Plain Tylenol (the PM version makes me feel awful). This has sometimes helped a bit, because sometimes the sleeplessness seems to be due to little aches and pains I'm not really aware of until they're eased.
2. Avoiding food for at least four hours before bedtime, so I'll have no heartburn or digestive distress. This helps a lot.
3. Making sure it's nice and cool in my bedroom -- too much heat makes sleep impossible for me. That may just be a personal preference, though.
4. Taking my calcium supplements at night, because they tend to have a slight soporific effect.
taking my ginkgo and ginseng any later than noon -- because they tend to energize me.
6. Not eating a lot of sugar late in the day -- and this helped even before I became diabetic.
7. I don't drink milk, but I'll sometimes have a spoonful or two of Splenda-sweetened vanilla ice cream before bed, for the slight soporific effect of milk products. This helps a little at times.
8. Keeping a fan or a white-noise machine going in my room, to "smooth out" the nighttime sounds. This is a big help.
9. I always keep paperbacks around that have small type and boring stories -- I'll read in bed until my eyes wear out, and if I'm lucky, I don't wake up when the book falls!
10. It can also help just to focus your eyes downward, toward your chin, and hold that for a couple of minutes (you can do it with eyes closed). When you relax, your eyes will naturally roll back, which is the position they're in when you're falling asleep... it can help sometimes.
11. The one thing that really works consistently is something I can't do very often, because it's bad for my glaucoma -- but when I'm truly desperate, I take two Percogesics. It's an over-the-counter painkiller that contains acetaminophen (Tylenol) and an antihistamine that causes drowsiness... and it calms my nerves and lets me fall asleep within an hour almost every time. HOWEVER -- I've learned not to take it more than two nights in a row, because I become dependent on it very quickly. I end up paying for the good
sleep by having a harder time sleeping the first night I don't
I sure hope you find something that works for you. Good luck!