Self control - is the ability to control one's emotions, behavior, desires, and the capacity of efficient management of good decision making.
Soccer players need to have self-regulation, discipline and self-control to execute some function in order to succeed to a higher level of play inside and outside the field.
Sometimes egos, difficult new situations, and environments outside of soccer make the athlete focus away from proper decision making.
Resting, eating properly, and focused training are crucial for the proper development of his/her potential.