Tea and milk and stuff like that is only good a few hours before sleep--if your stomach is digesting, your sleep won't be as good. I think the same thing goes for exercising... If you bring your heart rate up and then try to go to sleep, that isn't going to be good either.
I think the key is to start unwinding hours before you intend to sleep like leslie said. (leslie, I do the same thing with the stories, kinda like daydreaming, but I do it constantly!) You told me you like to jog, so maybe you could do that after work, before dinner. Eat something light, then have a cup of chamomile tea a few hours before bed, as little sugar as possible...
Don't think I haven't noticed that you haven't responded to my last email.

If you are having problems, it might help to talk about them and tackle them one at a time.