In a single narrative, it’s satisfying to an audience if the character changes. It doesn’t matter whether the character is a better or worse person, what’s important is that they’re not emotionally static. So the obstacles that you throw at the character, and that they overcome on the route to achieving their tangible goal, changes them.

Often, when a writer has grasped the idea that the character has to change, with so much else to think about, they chuck the emotional shiftin at the end. So...