The easiest way to overcome jet lag is to sleep when your body tells you to regardless of what the local time is. It is impossible to overcome jetlag completely.
Do as your body tells you to do and you will overcome jet lag as much as it is possible to do so. Staying awake trying to adjust to local time for social reasons will result in tiredeness for days.
Some people can easily sleep on aircraft, I have never been fortunate enough to be able to do that so jet lag probaby affects people like myself more.