You used to be a Jedi once until you went on a spat with the Jedi Academy and called them cowards for not helping saving your best friend's life. Feeling betrayed and emotional you left in a huff and despite your friends trying to convince you, you couldn't be placated. Now you only care about power. And decided to embrace the Dark Side as those feelings within you festered. Right now you're meditating when a familiar face appeared behind you. Your best friend who you assumed to be dead and whose disappearance indirectly pushed you on this path. You almost wondered if you weren't hallucinating.