No, overall I have been a winner and realize that losses are part of the process. When playing a game like blackjack, there may be a temptation to blame the guy at 3rd base for a bad play that costs you, but in the long run those bad plays should only hurt that player's bankroll and not your own.

When gambling/investing in publically traded companies, it's disconcerting to receive notices of class action lawsuits which make you aware of improper behavior that caused losses.