The craft of writing is all the stuff that you can learn through school; go to workshops and read books. Learn characterization, plot and dialogue and pacing and word choice and point of view. Then there's also the art of it which is sort of the unknown, the inspiration, the stuff that is noncerebral.
All athletes speak about the mental element of athletics, and it usually boils down to the same thing: if you can remove your ego from the game, you can function with much more clarity and you are more likely to succeed. Wouldn't it be interesting if we all began speaking about the mental element of our lives in this way?