Scott Adams values knowledge of self:
I wonder if the most valuable knowledge you can have is the knowledge of what you're good at. For example, I doubt you are working at the very best job for your aptitude. We tend to drift into our careers. It's more luck than plan. But imagine if you were born knowing you had the natural aptitude to be the world's best brain surgeon, or guitar player, or graphic designer. On the flip side, maybe you thought you had more talent in some field than you do, and wasted a lot of time preparing for the wrong profession.