So determine your own rhythm, with the help of your pro, and then stick to it, for all shots and with all clubs. It will make the game a lot easier.
In arriving at a proper speed for yourself, you should not swing so fast that you cannot feel or sense each of the fundamental moves that you make. These are the forward press, the immediate backward wrist break, the movement of the weight, the turn of the shoulders to the top, the lateral slide of the hips, and the slightly rocking action of the shoulders that start the downswing, and the definite feeling that the body is swinging the club until it gets near the ball. If, then, you can feel the hard forward swinging of the hands through the ball, so much the better.
We do not mean, we will hasten to say, that you should think of each of these movements each time you swing the club, or that you should feel each one separately every time you swing. What we do mean is that if at any time your pro should ask you what you feel you are doing at any stage of your swing, you can tell him, truthfully and exactly.
It is a fact, often brought out in lessons, that the average player has no idea what he feels or what he is doing during a large area of the swing. He will be conscious oŁ starting the club away from the ball and getting it, maybe, halfway to the top. But from there on his mind is a blank. This is because emotion (in the form of fear of a bad shot) takes over and wipes all conscious thought from the mind. This "blacking out" is gradually overcome as the player gains confidence. His fear of a bad shot subsides to some extent, reason returns, and he has at least a partial feeling and memory of what he is doing.
For this reason it is important, in building a swing, to start it at a slow tempo, so that the player can feel all the movements. As these are executed correctly and become habit, the tempo may be increased.
We cannot tell anybody how hard to swing, because everyone has his own speed or tempo. We can only say that you should develop a definite rhythm, that you should swing with the same effort every time, and that this should not exceed the speed at which you know what you are doing all the time.