It is important in golf to get the ball positioned properly in relation to your body to hit solid golf shots. What is important about ball position is that it matches the low position of the swing at impact. Now ball position will change depending on what club you are using and also what type of shot you are hitting. If you are trying to hit a low shot, high shot, draw or fade you need to alter your ball position in order to hit that specialty shot. But for playing most shots, when you set up to the golf ball everything should be left of center. So if this is the center position of my body then the ball position should be left of the center. With short irons, when I set up to the golf ball, my ball position is just slightly left of center of my body. As the clubs get longer the ball position will move slightly forward. So for my short irons and mid irons I am going to move my ball position just a little bit more forward in my stance so that it is about two inches forward. The reason for that is I have more rotation and I am trying to hit the golf ball in the front of my body instead of the back of my body. Then when I go to a long iron I will move it up a little bit more. Then when I go to my driver for example, the ball position will be even further forward. So when I set up to the golf ball and take my stance my bal position is off of my left armpit or maybe my left heel right here. Just remember as the club gets longer the ball position moves slightly forward in your stance so you will change it from anywhere from two to three inches. Also remember that your ball position will change depending on what type of shot you are trying to hit. Low shot, high shot, draw or fade. So the next time you go out and practice work on ball position, vary your ball position, and see how that changes your impact position.