#5 Discipline
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The most important trait in poker, like most other activities in life, is the art of discipline. Being disciplined is often the difference between walking away with millions and ending up on the losing side of a close encounter. Discipline is the difference between a smart fold and a risky raise and it only comes with dedication and a thorough understanding of the game.
It is important to be disciplined enough to be able to evaluate your mistakes objectively. This will help you study the game well and learn its intricacies. Successful poker players like Ike Haston and Ben Sulsky have been at the top of their sport for decades now thanks to the discipline they possess. It allows them to critically analyse the game and study it, so they are better prepared to face a tough situation.