Dan’s later experience illustrates one final lesson about instruction: you may need to change teachers as you yourself change. For several years he improved with his original golf coach, but at some point he stopped getting better. He had absorbed everything this coach could teach him, and he was ready to find a coach at the next level. If you find yourself at a point where you are no longer improving quickly or at all, don’t be afraid to look for a new instructor. The most important thing is to keep moving forward.