Learning to deal with stress, pressure, anxiety, success, and failure are all part of mental health which is essential for the young athlete.  In competitive soccer you have to be mentally tough or else you will not be able to deal with the psycological demands of the game. Therefore, the athlete who does not learn how to manage his mental state of mind will never reach his true potential.  You often hear coaches talk about being mentally prepared and about being focused.  In order for athletes to be focused and to be mentally prepared for competition they must be able to deal with the changes that can occur in the body and mind from time to time