Whenever I play poker there is always a lot of talk about luck. Usually it is someone blaming poor luck for their own losing mistakes. Sure, there will be times when you can't get any cards. But that's part of the game! To me, poker is a game of 100% skill. Everyone knows the rules and everyone has the same chance of getting lucky, so the game is about managing your money.
The same is true with the stock market. If you ever lose too much, it is always your own fault, no matter how it happened.