"It has been our experience that if a young man decides to go on a mission, he can not only play well when he returns, he will often play better. If an athlete could play well before he went on a mission, he will definitely play well when he returns; and, if an athlete could not play well before his mission, he probably won't play well when he returns. However, his chances of playing well are perhaps better if he goes because he will return with . . . better work habits, and a better knowledge of what it takes to be successful."