Every golfer at some point has been guilty of hitting a putt, then due to lack of confidence in the stroke, lifting their head to peek early to watch the ball roll.
This early peeking motion can create all sorts of issues in the stroke, and ultimately will result in a less-than-desirable outcome. If you are guilty of this, try the “no peeking” drill demonstrated below by Ryan Rustand.
Simply place a tee in the ground until the top of it is level with the putting surface, then place a golf ball on top. Make a putting stroke as you normally would, but after impact be sure to focus your eyes on the tee, not the ball.
This will keep the head very still and eliminate the tendency to peek at the ball.