On self doubt
You would think that by then I would have developed some confidence in writing a new story, but I hadn’t, and never would.
To lack confidence at the outset seems rational to me. It doesn’t matter that something you’ve done before worked out well.
Your last piece is never going to write your next one for you. Square 1 does not become Square 2, just Square 1 squared and cubed.
Be kind, be helpful or begone!