In hockey we have this saying:
It doesn't make too much sense to the naked eye but to a hockey player you understand it straight away.
Puck Luck can either be on your side or against you. You may be outshot and win 2-1. The opposition may hit the posts multiple times in a game. The puck may bounce off the board in awkward way and fall right on to your stick.
This is puck luck.
Sometimes you have it. Sometimes you don't.
You are can never tell when you'll have it.
But, you have to believe in the process. Hard work and the right things get the just rewards. You keep doing the right things and you'll have puck luck.
If you cheat it, ever, you'll never have puck luck.