In the real world, these statements help baseball players about as much as telling a heavy drinker to "keep it simple," or just take it "one day at a time." Not much. While these can be profound life suggestions, the ability to put them into action can be brutally difficult.
Elite athletes do not possess superhuman powers or extraordinary qualifications limited to a selected few. The characteristics that make a champion can be attained and developed by anyone who wants to excel in sports, business or in life.