I totally understand about the Ambien if it's addictive – I have painkillers that are potentially addictive so I constantly find myself trying not to use them until I absolutely have to, because I'm worried about getting hooked.

It sucks that you can't even break up the lying around with something – I can see how you've been getting wound up not sleeping, if all you can do is lie there not sleeping and worrying that you're not sleeping. I keep my iPod under the pillow packed with audiobooks so that I can at least listen to something, and like you say you've not gotten out of bed to do it or made yourself physically active again. Trouble is I keep falling asleep later with it still on! Oops.