Sometimes we just get into a bad sleep pattern and it's just hard to break. I'm finally sleeping 6 hrs straight now, for the first month post surg I only slept 4 hrs at a time. I would nap 3x a day-I never really slept until the pain level went down enough.
Here's a thought, ever try meditation? I find guided mediation (one of the forms) is helpful for me :).
Lots of good info on the web. My personal routine is that I visualize myself on a blazing hot beach, lying in warm sand. I start at my toes and work my way up the body, naming parts and telling them to relax. "Toes relax, it's been a long day it's time to go to sleep. Soles relax, it's been a long day..." you get the idea. As I name each part I envision it sinking into the sand a little more and the sun warming and relaxing it. I work my way up the body and I usually fall asleep before I get to my neck. It takes practice, but the repetition calms the right side of the brain and the imagery/feelings occupy the left.
You should know that valerian root is also hard on the liver. The combo of tylenol+alcohol+valerian sounds like trouble waiting to happen. Please be careful. Of course, ibuprofen could rip up your stomach with large doses and/or long term use, so there's just no good solution here.
I thought about suggesting the medical marijuana, but it's not so easy to get. I guess unless you happen to live in Colorado or Washington state. I don't think it's as hard on the body as tylenol and alcohol though.