I keep running into these self-styled creative experts who want to tell you there’s no such thing as inspiration. There’s just work.
If the goal is to stop people from using “waiting for inspiration” as an excuse, then great. Frankly, waiting for anything is always an excuse.
But inspiration does exist, or something very like it. (Pick your term.) You need not fill every page of your book with it, of course. Sometimes there’s the slog.
In fact, in my experience, all inspired work starts with slog, which is why I love this quote from Picasso.