Here is an excerpt from Great Grandmaster Tae Yun Kim‘s book, The Silent Master:
Somehow, as time goes by, we become impressed with the accomplishments of others, and conclude that we cannot express them ourselves. We usually find pretty good excuses why we can’t, and continue to keep ourselves limited. “He Can Do, She Can Do, Why Not Me?” In this saying is encouragement to develop the attitude of always anticipating success. The arrow of this attitude takes you in the direction of accomplishment.