MELBOURNE, FL John Morales, a private tennis coach and competitive tennis player who studied with John McEnroe’s coach, is teaching The Art of Learning principles to his nine junior players in order to improve their mental toughness, the quality of their play, and their ability to handle adversity both on and off the court. The players are reading two chapters a day and jotting down introspective thoughts about how the principles they are mastering apply to their game and their lives. Chapter content and the written assignments are then discussed. Among John’s objectives: educating parents who are entirely results oriented about the value of mastering fundamentals and the growth that can come from insights gained from losses.