I keep telling people that if they want to become professional writers, most of them are going to end up with the daily-slog system (that is, you write a page or two every day, rain or shine, feel like it or not). Oh, there are a few folks who are burst writers β who can set everything up in their heads in advance and then disappear for a month of 12 to 16-hour days, reappearing only when the book is finished. And there are cyclical writers, who do nothing for a week, then splurt out a 30-page chapter in two days, then do nothing, lather, rinse, repeat.
β "Twitchy, Twitchy" by Patricia C. Wrede