Fix Your Setup
Standing too far away from the ball means that your arms are overextended. This gives you too much bend in your upper body, forcing the club to come to the inside on the backswing.
When players stand too close to the ball, the body is vertically too upright. This setup position makes you stand up too straight and doesn’t allow for enough knee flex.
Make a fist with your left hand. Slide your fist back and forth between the club and your body. You should have just enough space to do this without touching the end of your club.