I have found that the top players in every field think differently when all the marbles are on the line. Great performers focus on what they are doing, and nothing else… They are able to engage in a task so completely that there is no room left for self-criticism, judgment, or doubt; to stay loose and supremely, even irrationally, self-confident; to just step up and do what they’re good at, concentrating only on the simplest nature of their performance.