Lose/Win people bury a lot of feelings. And unexpressed feelings come forth later in uglier ways. Psychosomatic illnesses often are the reincarnation of cumulative resentment, deep disappointment and disillusionment repressed by the Lose/Win mentality. Disproportionate rage or anger, overreaction to minor provocation, and cynicism are other embodiments of suppressed emotion. People who are constantly repressing, not transcending feelings toward a higher meaning find that it affects the quality of their relationships with others.
To focus on technique is like cramming your way through school. You sometimes get by, perhaps even get good grades, but if you don't pay the price, day in and day out, you never achieve true mastery of the subjects you study or develop and educated mind.
Stephen Covey (1932 -)
Source: The Seven Habits of Highly Effective People