Being The Best. (Part1)

Everyone wants to be the best, whether in academic, business or chosen career. But often find it difficult or impossible. Why?
The answer is quite simple.
I believe you can only be the best when you have discovered your greatest strength and weakness. This mean knowing what you can do perfectly, and what you will fail at if you try doing. Does this mean you shouldn't try something new? No. It mean knowing your "cooperative advantage", what you can do better than anyone.
Thanks for your time.