David Madden places great importance on the ability of writers to identify and fix errors of technique in their own work.
In his useful and practical book on self-editing for fiction writers, he states that a writer goes through four stages in the matter of revision. His own words on this matter are quoted below:
1. He makes a mistake, but fails to see it.
2. He makes a mistake, he sees it, but doesn't know how to fix it...hasn't learned enough about the techniques of fiction.
3. He makes a mistake, he sees it, he has learned how to fix it...but he just can't do it.
4. He makes a mistake, he sees it, he knows how to fix it, he fixes it...