" Facing the sagging middle when writing a novel, while inevitable, may be
overcome by pre-planning. I divide my collection of proposed scenes into three acts, each scene inciting tension that builds toward the final crisis in Act Three. If by Act Two the emotional river isn't spilling over the banks, I reassess the plot so that once the writing is flowing I don't slide into a dry creek. The central character should be struggling to navigate life well into the end of Act One, even if her fiercest antagonist is only from within. "

― Patricia Hickman , The Pirate Queen