I never hit a shot, not even in practice, without having a very sharp, in-focus picture of it in my head. It's like a color movie. First I 'see' where I want it to finish, nice and white and sitting up high on the bright green grass. Then the scene quickly changes and I 'see' the ball going there: its path, trajectory, and shape, even its behavior on landing. Then there is this sort of fadeout, and the next scene shows me making the kind of swing that will turn the previous images to reality.