You can think of your brain as having two distinct parts, what Galwey refers to as Self #1 and Self #2. Self #1 is your conscious mind, where you think, feel emotions, and consciously control your muscles. Self #2 is a nonverbal being, quietly managing the orderly running of the body, storing myriad experiences in memory and retrieving them appropriately without conscious effort.
In every human endeavor there are two arenas of engagement: the outer and the inner. The outer game is played on an external arena to overcome external obstacles to reach an external goal. The inner game takes place within the mind of the player and is played against such obstacles as fear, self-doubt, lapses in focus, and limiting concepts or assumptions. The inner game is played to overcome the self-imposed obstacles that prevent an individual or team from accessing their full potential.