It was a shame to see Rory Macilroy suffer at the hands of the game of golf on the final day of The Masters. His game desserted him and in his interview afterwards he was at a loss to explain what had happended.
His ability is beyond doubt but without a calm and focused mind he was unable to access that ability when he wanted to. His craving for success and ultimately his aversion to making mistakes, caused him to lose the balance of his mind and with it his ability to concentrate. When this happens your performance drops off dramatically.
It is the same for all of us. I hope he learns from this experience and develops the ability to keep a calm equanamous mind in the heat of battle.