If you can identify greatness in someone else, you already have some elements of that greatness within you. Only a person with similar traits is able to recognize those same traits in others. You must adopt the following as a permanent part of your everyday thinking: “If I can identify it, I can do it.”
Yogi Berra (one of the best baseball players ever) once said of sport: "[It is] 90% mental. The other half is physical.”
If you want to play at the level of the best athletes in the world, you need to think like them. Achieving this goal requires psychological preparation through mental training and study.