Insomnia Sucks! Help!

[Serene]

This year my insomnia has gotten worse. The Dr. wanted to give me Xanax but I don't want to take any drugs if possible. Last month I had two nights I didn't sleep at all. Last night I got 1 1/2 hours of sleep. I went to bed an hour early so I could get a decent nights sleep. I am averaging 5 hours at most and have to be up for work at 5 am at the latest. Last night I tried everything. I even took 3mg of melatonin to see if that would work because I have read that helps you fall asleep. Nope. Wide awake. I laid in bed and tried to fall asleep. I cleared my mind, tried visualization, tried tightening my body and then letting it all go and breathing, seeing colors and changing them, feeling my body laying there too aware of every sense I have, my senses seem to be extremely sensitive, so I focused on my hearbeat that I could hear and feel, the sensation of the fan on my skin, on and on and on, that always relaxes me but it sure didn't put me to sleep. Could it be I am too excited to fall asleep and wanting so badly to remember my dreams that I sabotage myself? The strange thing is I feel a little lightheaded but I am not exhausted. I think it might just be mind over matter because I know I have to go to work and I know it is going to be a very busy day for me so I have to do it. I can't blame lack of sleep on my dogs because they didn't keep me awake last night. Please give me your advice! I am willing to try anything other than drugs! P.S. I do a lot of walking, running, and riding bikes so exercise is fine this is my norm.