The Underworld of a Story's Third Act is symbolically important for creating powerful and realistic change with your characters and plot.
Writers can use the metaphoric Adventure World of a story's Second Act to better understand this crucial part of story structure.
If you want to deepen the complexity of your story's theme, one tool you can employ is Robert McKee's thematic square.
Examines the role of the antagonist in the second half of a story's structure--the Second Pinch Point through the Resolution.
Ask these important questions to make sure the passage of time in a story is strengthening rather than weakening its narrative power.