ARGH.. FRICKIN INSOMNIA..

I am starting to notice a trend... whenever I am stressed or worried (so pretty much always), I have wicked insomnia. Its like my brain won't shut the fuck up and let me sleep. I have an important appointment tomorrow at the IRS at 1215pm. It is 340am and I have been trying to fall asleep for almost 4 hours. Wtf. I think I need to talk to my doc about this. I did notice that when my dentist gave me Valium (diazepam) to take the night before my dentist appointment, I fell asleep quickly and slept great, and woke up on time. I wonder if this is the answer to anxiety related insomnia. I've tried just about everything else.. :(