Poker is a game of decision making. If you are better at making decisions than your opponents, you will win. Good decisions are made by maximising the information our opponents offer us at the table. This information can come from betting patterns, tells and player profiles. You have control over all of this information as long as you are paying attention. But while you can control your decision-making advantage in terms of information from betting patterns and the like, positional advantage is something that you have little control over since the button moves around the table.

The person who gets to act last in a hand has an automatic advantage over his opponents since he is acting with the most information at each decision point during the hand.