I learned early in sports that to be effective - for a player to play the best he can play - is a matter of concentration and being unaware of distractions, positive or negative.
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About Tom Landry
Tom Landry was a 20th-century American football coach and player. Thomas Wade Landry was an American professional football coach, player, and World War II bomber pilot. Regarded as one of the greatest head coaches of all time, he was the first head coach of the Dallas Cowboys in the National Football League (NFL), a position he held for 29 seasons. Read more on Wikipedia →