There are two ways you can curve the golf ball, the worst way is to the right, a slice, but some golfers fight a hook. Typically it is a better player’s mistake to hook the golf ball because when you hook the golf ball you are coming in on too shallow an approach, too much from the inside, and your hands tend to cross over. A lot of it is a timing mistake too, with your hands and arms working too fast relative to your body the clubface is going to close. The correction is trying to feel like in your backswing you resist a little more with your hips as you go back and keep the golf club more out in front of you in the backswing and in the downswing. People that hook come in too much from the inside, their body stops, their hands flip over. Club out in front of you in the backswing, club our in front of you in the downswing, and then let your body turn through. That will get the timing right. Keep the clubface square coming through the ball. It may also be your grip. Check your grip and make sure that your hands are not turned too much to the right. Weaken your grip just a little bit by turning to the left with your hands and hold on just a little tighter. There is that old piece of advice that says hold on real soft, but that is better for someone that slices rather than someone that hooks. If you hook, hold on a little tighter, weaken your grip a little bit, club out in front of you and then turn through the shot. That will eliminate that curve out to the left.
Hank Haney is the instructor to PGA Tour Pros Tiger Woods and Mark O'Meara. He is listed as one of Golf Magazine's Top 100 Teachers and Golf Digest's #4 instructor in the world.