I don't identify as any of those D's. And, I'm not discounting your experiences with writing.

I wrote a book (http://shop.oreilly.com/product/0636920043027.do) and it was the hardest thing I ever did.

I love this quote from Thomas Mann: ""A writer is someone for whom writing is more difficult than it is for other people."

Keep at it, even though it tears you to shreds. It's worth it. It tears everyone who does it to shreds. You aren't alone in the way you feel about writing and you can do it too.