If you want to break par, when you're on the course you have to be a player, not a student of the swing. With the elite players we teach, we ask them to place a physical "line of commitment" on the ground behind the ball for every practice session. For each swing, they must decide what shot they want to hit, visualize accomplishing that shot successfully and go over any swing thoughts they might have from behind the line. Once they step over the line and get into their setup, the only thoughts are about the target. Try it during your next practice session. If a mechanical thought creeps in when you're over the ball, step away, behind the line, and start again.