Control / Discipline. That's much more important when losing. Know when to stop. Sometimes greed gets in the way so you lose your winnings. I experienced beginner's luck before but lost them all because I want more. It doesn't matter how much satoshis/bitcoins you allow yourself to lose. Just put a cap and stop when you reached that.
It will happen to everytime someone,and you will say you shouldn't go big... but otherwise you probably will.