Do not judge success by what you have achieved, but what you should
have achieved with the ability you have.
A player has good natural ability. He should be trained to use it. He should
strive for perfection (or as near to it as possible).
Confidence is born from that knowledge and faith in himself.
Confidence is born from the player when he has faith in his coach
and his team mates. When striving for the mastery of any one thing, you
have to carry on after many failures, but when it is finally achieved you
should never lose your confidence in carrying it over again and again.
Too often a player loses his confidence when an opponent gets on top of
him early in the game. He becomes frustrated and loses his initiative and
desires to fight back with everything he has.
Confidence is gained by understanding team mates and their style of play
and in the knowledge that he knows, what team mates are going to do.
Confidence is gained by intelligent communication to each other.
Confidence is gained by studying and gaining knowledge of opponents
strengths and weaknesses and applying that knowledge to exploit them to
your teams advantage. Concentration assists confidence and when playing
in a match (football) his sole thoughts should be how to apply himself.