i have the same problem i live in canada and start trading halfway through the japanese session. biggest things for me is making sure i wake up at the same time everyday and keeping my room dark as night a couple hours before i go to sleep.
i have been a night owl for 15 years, and can sleep in the front yard now with the guy next door mowing the grass. so until you grow your vampire eyes, here are a few tips if you just can't quite get to sleep. * if you are not asleep within 30 mins or so, get up and do something boring for 5-10 minutes. no trading tinkering or tv, no trading books, nada... * take a cool/cold shower. lowering your body temp helps you fall to sleep. * get a good set of hotel curtains to block out the light. or if you want to go ghetto, cover them in aluminum foil. * keep the bedroom cold, i have a small window unit in the bedroom. i keep the fan on for the white noise. * learn to meditate. go ahead in laugh if you want, but you have to learn to turn your mind off. * go to bed and get up at the same time each day. * drink a high protein shake before bed. your looking for the highest concentration of the amino L-tryptophan. * no coffee or alcohol 4-6 hours before bed. i still can't do the alcohol part.