I thought the article about sleep sent over by MTuchman was terrific. A coouple of things I do that help: 1, recite poetry to yourself 2, do yoga or tai chi in your head - I find that the effort of remembering what movement comes next often puts me to sleep. 3, if all else fails, have a small battery-operated radio on, under your pillow, low enough so it won't bother your spouse; what they're tallking about on the air will distract you from your mind chatter.