I think Danny Hillis came up with this.

1. You start with an image of the goal—you have some idea of what you’re looking for.
2. You go through a transition from being yourself in your ordinary life into being a pilgrim on a magical quest
3. At some point your encounter the labyrinth. You get lost, disoriented, scared. But you must go through it in order to reach reintegration
4. The draw—at your lowest point of despair, you hear a faint beacon…
5. The payoff—you finally reach your goal. And there is a secret, unexpected payoff as well.
6. The return, where you assimilate what you’ve learned
7. And the memento—something you keep afterward