It’s not like Character A wanted to be a villain. Honestly, they’ve just found that being good is just too much effort. Being bad, well, that’s another story. It was easier than breathing -- rob a few banks, you’re set for a few years. The same applied to their business practices, home practices -- really, just anything they were doing.
It doesn’t occur to them until accidentally watching a positive attitude and wellness ad on YouTube of all places that maybe they weren’t lazy, but just had the wrong mindset. They reach out to a wellness coach (Character B) who is basically a golden retriever in human form who slowly helps Character A become something more. Soon, they don’t just survive, but live.