There are two prominent lines of thought in golf swing theory. One is that you swing the head of the club. The other is that you swing the handle. But what you really want to do is swing the whole club, not just one part. Doing that will eliminate swing flaws almost instantly and lead to better shots in the same amount of time.
Have you ever cut wood? You swing the ax the exact way you should swing the golf club. You swing the whole axis. Both ends of the shaft, the handle and the head, travel in the same direction at any time. That may sound obvious, but it’s a finer point than it seems.
Hold a golf club in front of you, with one hand in the middle of the shaft. With the stick hanging vertically, move your hand to the right. The end of the grip and the head of the club move in the same direction. This is how the ax moves when you lower it onto the wood. You know that’s how you get maximum power, so that’s what you do.
Now, with the club hanging vertically in front of you again, push the end of the shaft to the right and, using your hand as a pivot, allow the clubhead to react to the left. The two ends of the stick move in opposite directions. If you swing the ax this way, you would not only lose power by slowing down the ax head, but you would also lose wood because the head now flails instead of continuing in a directed path.
How do you put this idea into your golf swing? Swing the stick back so it doesn’t spin at all. Deliberately breaking your wrists will do that. Retrieve the stick as a unit and let your wrists break when necessary. Not before, not after.
On the downswing, do the opposite. Swing the club down as a unit and hold the wrist break until the momentum of your swing releases it. If the wrist break is released too early, this is called a pitch, a short name for the two ends of the club moving in opposite directions.
To see how this really works, hold the club in your right hand (left hand, for left-handed golfers) in the middle of the shaft. Slowly move the club back so that both ends are moving in the same direction, that is, there is no twist around your hand. Now slowly move the stick down, again noting that the whole stick moves as one unit. There is no spin around the hand as the clubhead enters the ball, nor does the shaft roll back as the clubhead advances.
Once you understand this idea, start taking slow practice swings so that the club moves exactly like this. When you can put this move into your swing at normal speed, it ensures better ball hitting.