Despite being told that he would never achieve much in Judo due to a physical limitation of having only one arm, the young boy persevered under the tutelage of an old judoka. Over the course of three years, the boy learned one move and excelled in it.

One day, the boy was competing in a regional Judo championship. His opponent was bigger, stronger, and more experienced. Despite this, the boy managed to execute his signature move flawlessly and won the match, earning the championship.

After his victory, the boy approached his master and inquired about the reason behind mastering just one move. The master smiled and said, "Because you have almost mastered one move, and because, according to my experience as your teacher, you have overcome your greatest weakness - your self-doubt."

This story teaches us that with determination, self-belief, and the right guidance, we can overcome our limitations and achieve extraordinary things. It also highlights the importance of focusing on strengths rather than weaknesses.