One method that many of the Swedes have used for years is to mentally split a round of golf into 6 sets of 3 holes rather than the traditional 2 halves of nine. Their idea was to play each set of 3 holes in 1 under par, which would result in a 66 if successfully implimented. The great benefit though is that it enables the player to mentally shut the door after each 3 holes, whether good or bad and start afresh with the new set.