Hi Black mamba,
In our house we call it 'the gerbils' ie: 'I've got the gerbils going tonight'.
This has been a problem since the end of grade 6 (age 12). When I was young I used to sleep with my radio on. This helped to force my brain to stop working. When I got to university the gerbils became a real problem because I was so exhausted during one final exam that I remembered nothing. Luckily the Prof was there, saw what happened and evaluated me on the years work rather then the 50/50 split it was supposed to be. He was quite concerned and expected me to address this problem which I did.
I got sleeping pills for exam time. Best thing I ever did. Since I did not want to spend my life on pills after about 2 sets of exams I started taking them on a 'variable interval rate' outside of exam time to try and retrain myself to sleep. It worked. I had realized that I was in the HABIT of staying awake at night. There was nothing wrong with my body, it was my brain. You see....night time in my house was dangerous so I had taught myself to stay awake for saftey reasons.....problem is that I could not stop it once I had left home.
Now that I am married and have done and ended the pill thing years ago, I find the gerbils will come back if I have coffee to late, or if something is bothering me. When this happens I a) sleep in the spare room (change of location really helps). If it's severe I'll b) sleep in the basement with the tv on, or the tv and lights on.
My husband accepts this quirk I have and as I age the problem is less and less. In fact, sometime I sleep in the spare bedroom just 'cause I can, not because I have to and that is really freeing.
SC