Reading Publius's Test of Wills and dude is prescient:
“Oh, come off it, Skywalker,” said the shape, coming closer now, his lightsabre ready. “Don’t pretend like you don’t know. You were me when you attacked your father, and you were me when you joined the Emperor at Byss, and you’ll be me when you kill your sister, and you’ll be me when you kill the Emperor. You can’t make me go away by saying you reject the dark side. Every time you slip, every time you use your anger and hatred, every time you reach for the dark side, you
are me. I won’t go away, Skywalker. I’m not some ghost that haunts you. Every moment you draw breath, I breathe. Every time you eat, I eat. Every time you grow more powerful, so do I. Face it, Skywalker, I am you.”
“No—no, I am not you,” he said, killing his blade. “I will not be you. Not because I can’t, but because I won’t. I reject you. I choose not to be you today, and I’ll choose not to be you tomorrow, and every day for the rest of my life.”
And the shape froze, his own weapon extinguished. “I won’t go away,” he growled.
“I know you won’t,” answered Luke. “Every day I wake up I will have the choice to be you.
?v=ctoWE_2iJOw
Very similar, but written 10 years before.
