Colin has a nice post over on his blog on the importance of belief for an athlete.
"Ask yourself this...How important do you think belief is? Do you believe in yourself? Do you have belief in your teammates or co-workers? Do you have complete belief and confidence in your coach or boss that what they are doing is the best thing for you? The power that believing has can not and should not be underestimated, it has the ability to make a mediocre athlete GREAT, and a great athlete MEDIOCRE. Without having complete confidence and belief in yourself and the people around you, then oneself will never reach their true potential."
Read the rest on Colin's blog