I was reading an interview with Games of Thrones author George RR. Martin and he said some things that made me think that we're not so different from published authors.
Question: What took you so long to write this book?
I've been doing a ton of rewriting, trying to get it where I wanted it to be. Some of these chapters I've rewritten more times than I can count before I'm satisfied with them.
Question: How do you feel Dragons (his newest book) will compare to his others?
Sometiems I think, "This is terrific, I did really well," and sometiems I look at what I've written and think, "That's garbage, I don't have any talent at all." Ultimately it's up to the fans and critics and reviewers - your own judgment is always suspect.
I've never read these books, but it did make me feel better to know that even best selling authors get the same feelings I do.
Have a great weekend.
Note: I didn't type in his whole answer to the questions. To see the whole interview it's in Entertainment Weekly.