I cannot imagine a "writer" failing to get something out of this book. It's a collection of essays and not all of them are about writing. Some are about the visual arts! One is a letter by Albert Einstein. Another, by Roger Sessions, is about musical composition. Even the art of sculpture is not forgotten.
Most, however, are about writing as writing is believed to be and, in best cases, is a 'creative' enterprise. In a single volume, you will find many writers/authors and all of them, it seems, are "speaking" directly to you. That is especially the case with Thomas Wolfe's "The Story of a Novel". Think of it as a Monet but with words. There are dabs and strokes both here and there and up close they mean very little, but from a respectable distance, the whole will coalesce. In a single setting, Wolfe gives you "his" Paris. The only other "work" which does the same and as well is Gershwin's "Rhapsody in Blue".
Wolfe writes: "During that summer in Paris, I think I felt this homesickness more than ever before, and I really believe that from this emotion, this constant and almost intolerable effort of memory and desire, the material and the structure of the books I now began to write were derived."
Now --the obligatory "recommendation": get this book. You won't regret it.