[p_headless_g]

I've been an insomniac since I was about twelve. Every time I try to sleep I start thinking "You know, there are better things I could be doing right now". I've had times when I've literally gone a week without being able to sleep at all.
The best method I've found for getting to sleep is just getting some exercise and tiring yourself out before you sleep (make what you will of that. I'm trying my best not to resort to being filthy here).
Go out for a run, do isometric exercises for half an hour, whatever you like. It tends to help me. Also, having a voice in the room tends to give you something to doze off to. Listen to Radio 4 while you're trying to sleep. I'm not suggesting that it's boring, but it helps if you know someone else is alive outside of your bedroom.