Your personal belief system has an effect on how well you preform, particularly in competitive pressurised situations.  Loss of confidence can be a major impediment to peak performance and is a product of competitors being sabotaged by their own negativity.  Always change the negative dialogue in your head into positive, constructive self-statements. 

Elite performers perceive the world in a way that gives them an advantage towards success, they have an expectation of success.  They believe in themselves and their capabilities.

Every player can learn to have winning thoughts and learn to produce an inner dialogue which will increase their chances of attaining peak performance.