The most detrimental problem for a writer, isn’t Failure – it’s SUCCESS.
The Mystery of the Missing Best-selling Authors.
-- You see it all the time. A hot new author puts out book after book, then suddenly the story quality drops, and those books aren’t so wonderful any more. But you keep buying them on the hope that what made them great (in the first 9 books,) will resurface. Instead, that author suddenly drops off the face of the earth; sometimes for years – sometimes forever.
( THIS is what happened... )
DISCLAIMER: As with all advice, take what you can use and throw out the rest. As a multi-published author, I have been taught some fairly rigid rules on what is publishable and what is not. If my rather straight-laced (and occasionally snotty,) advice does not suit your creative style, by all means, IGNORE IT.