Every novelist who has pushed past the 50,000-word mark knows the feeling: somewhere around chapter fourteen, your protagonist stopped being one person and quietly became another. Not through earned transformation — through drift. The want/need gap, that productive contradiction at the heart of every compelling character arc, has a way of dissolving in long fiction not because writers forget it exists, but because the daily pressure of generating words erodes the precise tension that made the character compelling in the first place. This guide offers AI prompts designed to audit, stress-test, and restore that gap across an 80,000-word manuscript.