First off, to find what ball position you have, put a shaft in front of your feet and a perpendicular line where the ball is and that points to your ball position.
One of the most common mistakes I see at the range is people play the ball too far back in their stance.
Since almost all golfers are either stuck, or whip it too far inside and come over the top, it’s no wonder.
A ball farther back in your stance is just easier to get to, but it promotes the retention of bad habits and starts some new ones. The list is longer than the list of golf courses I hate.
Since most average to below average golfers never have a proper weight shift to their front side, playing the ball too far back in the stance isn’t going to help this.
Actually, an excellent range drill is to practice with the ball too far forward, which forces you to go get the ball. As long as you keep your upper body from moving forward, this is a great drill.
IMO, I like to use a basic formula for myself and most of my students. There are differences of opinion, but I think what follows is the best and easiest way for most golfers to keep it simple and create the proper angle of attack for each club.
Obviously width of stance plays a part of this if you judge ball position according to your feet.
That being the case I use this formula. With a driver, I like the feet shoulder width apart and as the clubs get shorter, the stance should naturally get a little narrower for comfort. How much narrower is individual.
For ball position, I like LW right in the middle of the stance, or under the sternum and I like the driver on the instep or heel of the front foot…with everything else staggered in between.
Obviously those are for regular, run of the mill shots. In the trees, into the wind, half shots, higher than normal shots, etc., require departing from the norm.
Please feel free to ask for clarifications on any of this.