" Keep your head still throughout the swing. It’s imperative to keep it still. Keep working at it until you get it. 1. See if you sense any movement in your head during the swing. Notice whether there is more or less movement on each succeeding swing. 2. Early in the downswing, the right elbow should return to the right side. (Sam Snead) 2. During the next few swings, pay attention to your right elbow. Don’t try to change it in any way; just see if you can tell what it does, especially after you begin the downswing. Notice any changes in its position. 3. Keep your left arm straight. 3. Notice whether your left arm is straight "

― W. Timothy Gallwey , The Inner Game of Golf