The problem is, everyone who devoted their entire life at something, worked with insane intensity, and devoted themselves wholly to it, is not the best in the world either, except one.
Being "the best in the world" is not necessary. By definition, there can only be one "best in the world" at any given endeavor, so most people will probably never reach that level at anything. There's much enjoyment and satisfaction to be had in doing things for their own sake rather than comparing yourself to others.
