Picture the young swimmer stepping up to the starting blocks in a championship race. What is he thinking in that moment?Visualize the soccer player, stepping up to take the deciding penalty kick. What is going through her head?Think of the basketball player, standing on the free throw line needing to make two free throws to send the game into overtime. Is he thinking about making the shots, or worried about missing them?Each of these athletes has a voice in her head, a voice telling her she is strong enough, she is calm enough, she is brave enough, you ARE enough for this moment.Or, that ...