A stable preshot routine is your template for consistency in a round of golf. By repeating the same procedure prior to each shot, you will gain confidence and reliability in your game regardless of the pressures during the round. In addition, you will develop a rock solid set-up everytime to the ball.
Most of all the control you exude during a golf shot comes from these four pre-swing elements - the grip, alignment, ball-position, and posture. In a good pre-shot routine, a player will subconsciously cover all these pre-swing elements with precision and accuracy. It is also important to note that a pre-shot routine should not be so exact each time that it consumes the player. It must be natural not mechanical. Generally, a good routine is loose enough to cover all the pre-swing elements and it lasts between 15 and 25 seconds.