Tennis Anyone?

[buboe_the_rat]

"When a player comes to recognize, for instance, that learning to concentrate may be more valuable to him than a backhand, he shifts from being primarily a player of the outer game to being a player of the Inner Game. Then, instead of learning concentration to improve his tennis, he practices tennis to improve his concentration. This represents a crucial shift in values from the outer to the inner."

--The Inner Game of Tennis