Many people make the mistake of thinking that market behavior is truly predictable. Nonsense. Trading in the markets is an odds game, and the object is to always keep the odds in your favor. Like any other odds game, in order to win, you’ve got to know the rules and stick to them. Unlike other games, however, the single biggest reason rules are necessary is to keep a check on your emotions. Assuming you have the knowledge you need to take a position with confidence, the hard part is executing the trade correctly. That’s what the rules are for.

– Victor Sperandeo, Trader Vic – Methods of a Wall Street Master