Interesting - I do something similar, except that I fast for 24 hours
before getting on the plane. Nothing but water for that period. Once on the plane though, I generally eat the first meal - it helps me to go to sleep on the plane - but no alcohol. Of course, if your someone that can't sleep in a plane seat, you're probably better off with your system, as mine is all about getting me ready to sleep on the plane.
The other trick for me is to try and arrive at night, so I can pretty much go straight to bed. When I wake up the next morning I'm in the right timezone.
If for whatever reason I can't organise to arrive in the evening, I just suck it up and stay awake until a normal bedtime (no cheating, although it's tempting, going to bed early will just leave you out of sync with the clock). It helps if you can be outside in the sun during the day whilst doing this.
One last thing, sometimes your problem is not having to stay awake until night, but that night arrives too quickly because you've flown east. In this case, my solution is to prepare by making sure I only sleep 3-4 hours the night before, meaning that even if it's 5pm bodyclock time and midnight wall clock time, I'm nevertheless ready to go to bed.
At any rate, I'm no longer young, but I travel at least a couple of times a year, and I have zero problems with jetlag.