The  essential component of the discipline of trading is that trading possesses a self-punishing feedback mechanism. If a trader breaks his or her trading rules and strays outside of the guidelines for controlled behavior, his or her edge will inevitably be lost. The punishment may be quick, as it is in the case when the opportunity for profit is sabotaged by the trader’s momentary loss of focus. Punishment may also be longer term, which occurs when the trader gradually strays from his or her trading rules. This may bring success at first, but it turns to failure the further away the trader strays from his or her established pattern. Whatever the exact circumstances, a trader who fails to exhibit the qualities associated with discipline will surely lose, whether quickly and painfully in the short term or slowly and gradually over the long term.