Lovely. This kind of article always ignites some obscure desire to become a professional writer, even though I would probably be crap at it :)
It's enough to simply read the right authors, or at least it was for me. You can tell if you belong in their company or not. If you can't, well... that's a strong hint in itself.
And then ask yourself if you care, maybe you'll never write enough to have a shot at a publishing deal, much less a bestseller, but maybe you just like telling stories to yourself and maybe a few friends.