Star Wars: The Empire Strikes Back

Film/modern mythology

Luke enters the cave on Dagobah and fights a phantom of Darth Vader, whose mask, when broken, reveals Luke's own face. 'What's in there?' 'Only what you take with you.'

The cave is the unconscious. The enemy's face is your own. Yoda tried to tell him.

The pattern underneath: The Shadow. The parts of yourself you've pushed out of sight, not because they're bad, but because they didn't fit the version of you the world seemed to need.