[CamperBob2]

The only way to know if you'd be crap is to try writing. Short stories are a fun place to start, just pick a genre you like and give it a shot.

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.

[egypturnash]

Find their first published stories. Find their earlier stories, sometimes they get used to fill out a shorts collection for laughs. Then ask yourself if you belong in that company.

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.