@philocxlyy Something that really helps me is setting an outline for my book. Like for my book, Neptune and its Winter, I have a outline for the acts it'll have, how many chapters are in each act, when the act starts, and when the act ends. Because of that outline, I'm almost done with that book and it has over 40 chapters, including the act separations/each acts' prologue and epigraph. Hope that helps!