Bob Knight

“If you can keep your head when all about you Are losing theirs and blaming it on you; If you can trust yourself when all men doubt you, But make allowance for their doubting, too; If you can dream—and not make dreams your master; If you can think—and not make thoughts your aim, If you can meet with Triumph and Disaster And treat those two impostors just the same; … If you can force your heart and nerve and sinew To serve your turn long after they are gone; And so hold on when there is nothing in you Except the Will which says to them “hold on!” If you can fill the unforgiving minute With sixty seconds’ worth of distance run, Yours is the Earth and everything that’s in it, And—which is more—you’ll be a Man, my son! Wow! Kipling would have been a hell of a coach.”
― Bob Knight, The Power of Negative Thinking: An Unconventional Approach to Achieving Positive Results