“Overpracticing can make you a worse, instead of a better putter. Your main concern on the course is ‘feel’. That’s what you want to develop on the practice green. When you’ve got a good feel going, quit practicing. Don’t risk losing it by getting tired or losing your concentration. My objective when I practice putting is to achieve a fluid, rhythmic feeling between my hands and the ball in a well-timed stroke. When I get the desired sensation on six or seven putts in a row, I stop.”
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Jack Nicklaus, Jack Nicklaus’ Lesson Tee with Ken Bowden (1972)