The three-star rating is more a reflection of where I was when reading this rather than the book as such. Five chapters on various aspects of why writers write, and what they are doing when they write. I think the mismatch for me was the very analytical approach which I would normally enjoy but was probably a bit much for the way I was feeling at the time. As always though she has such a way with words. A few delicious phrases:

Referring to the task of writing: "laboring in the wordmines" This phrase really captured that grappling, and bringing out the right word.

On finding that the nickname she had been called was not her real name: "What a revelation it was for me to discover that I was not who I was! And that I had another identity lurking out of sight, like an empty suitcase stashed in a closet, waiting to be filled."