All golfers who want to improve their game are faced with a difficult problem: since it is impossible to work on all the phases of a swing, what are the key phases to concentrate on?
Speaking for myself, experience has taught me to remember (whatever else I may be thinking about in playing a shot) to be sure and hit through the ball—that is, to make sure that my club continues through the ball low along the ground on the line to the target. This is a very important part of the hitting action, this definite hit-through for two feet or so past the point where you make contact with the ball. You can take the club back wrong, or a little wrong, but if you hit through correctly on line, you will make out fairly well.
I stress this point because many average golfers of my acquaintance tend to think too much about parts of the golf swing that are much less essential. I believe that if they concentrated more on hitting through the ball, most average golfers would find themselves playing better golf shots consistently.
from GENE LITTLER, Palm Springs, Calif. Touring professional