Keep your eye on the ball.
We often hear that we need to keep your head still in the golf swing and I often hear TV commentators say “look how still he kept his head”. The golf swing places some demands on the body due to the rotation needed. Trying to keep you head still will only make things harder, limit body rotation and rob you of speed. To produce an efficient, powerful golf swing, nothing really stays still and this shows on 3D biomechanical testing. In fact the best players in the world average between 10 and 40 degrees of head rotation at impact. This means that they are allowing their head to rotate with the torso.