BigJetDriver69:As someone who flies across time zones from Japan to the U.S. to the Middle East on a weekly basis (sometimes daily), I can tell you that the the tips above are about the best you can do.
You cannot completely mitigate the effects of jet-lag. It is truly a result of resetting your circadian rythym. That just takes time. But you can lessen those effects to some extent. Try the suggestions above, as well as this: limit what you eat on-board and during your flight day to a light snack. Include fruit if you can. And drink, drink, drink.....WATER.
P.S.---Take vitamins on a regularr basis. It does help!
Rob Davie
As someone who flies to Japan 10 - 12 times a year, the only thing I would add is to try to get on the schedule when you arrive...If you arrive in the mid afternoon, resist the urge to go right to bed. Stay up until 8:00pm, go out & have dinner and then have a good night sleep. If you hit the bed as soon as you hit the hotel, you'll only wake up that much earlier.
Tim