Even the greatest players in the world have trouble concentrating under pressure. The ability to concentrate is critical to successful performance in all sports, and especially in golf. During an average round, you spend less than 40 minutes actually playing your shots, which leaves more than three hours of downtime. In golf, it's hard to maintain concentration because you have to turn your concentration on and off several times during a round. Total concentration is the ability to immerse yourself in a task without becoming distracted or pulled off task.
Concentration involves several elements.
Below, I've discussed some specific methods for improving one's concentration on the course. Focus on the present moment. To play your best, you must keep your mind in the present moment, focused on the requirements of the task at hand. One of the biggest errors I can make is thinking ahead about the results of making or missing a shot or a putt, or thinking about what happened on the last hole. You must be aware of when you lose your focus, and then refocus attention on what you need to do to execute a good shot next.