In golf, you find your target and then set up your shot addressing the ball standing on the line called parallel left. You square up your club to a perfect 90 degrees and then mold your body around the club. That ensure you that you are 'standing in the shot' instead of guessing.
Pool is the similar, but set up is no different in theory, just accomplished in different steps.
Buddy Hall taught me to first locate where you want to go, how you're going to get there, and stand focused on the shot, only one step away. When you are clear in your mind with exactly what you want to do, you step into the shot with your left foot, feel the entire cue ball's distance of travel, and stroke that entire shot.
That information took my game to near pro level.