All the trips I have had from Aust to Europe never seem a problem I've even managed to stay awake for a full 40 hours (up early in the morning and the flight doesn't leave til midnight ). I just stay up until early evening at the destination then wake up next morning ready to go.
Coming home Europe to Aust is something else altogether, I've arrived in the evening gone to bed slept all night got up next morning and been a wreck for another week.
Arrived home in the morning stayed up all day (very hard) gone to bed and wake up in the middle of the night, then slept until 4 in the afternoon. It takes a week to get back to normal.
With everyone I know. going over is not a problem coming back home is the hardest to re-adjust to normality.