Nine times out of ten, Advice fuels doubtful motivations such as Money, Fame, & Success. Of course, we all know the only motivations that actually work are banana pudding, naps, and drinkable yogurt. All other motivations lead directly to DOOM.
Prior to domestication, writers command a distinct self with particularities and talents. Somewhere along this blissful path, their souls are squashed by the Inevitable Plague of the Life Crisis. The realization of what one should be dawns.