One of the hardest things about playing golf well is that you must learn to concentrate. Not only do you have to learn how to concentrate but you need to concentrate in two entirely different ways. The first way you have to concentrate is a very analytical, very precise almost left brain kind of information process. You need to choose the right club, you need to aim the right way, you need to align your body in an appropriate manner to the ball and you need to have a correct grip. All of these things are very precise, they are done by the numbers and they are done very carefully.
Once you start the club in motion you must process information in a more holistic and integrated fashion. You must allow the stimuli to come together and they must flow. It is almost like being a surgeon on one hand and a hippie on the other. Very few of us are made up in such a way that we do both of these well. What we must do is learn where our strengths are and our weaknesses are. Then we must practice our weaknesses in order to make ourselves better concentrators in order to concentrate both ways on each golf shot.