I recently read Brenda Ueland's If You Want To Write and your article made me think of this passage from the book.
“I found that many gifted people are so afraid of writing poor that they cannot summon the nerve to write a single sentence for months. The thing to say to such people is: “see how bad a story you can write. See how dull you can be. Go ahead. That would be fun and interesting. I will give you ten dollars if you can write something thoroughly dull from beginning to end!”
— Brenda Ueland, from If You Want To Write