It's usually best to talk to the bad guys. They are often symbols for issues that need to be addressed. A Jungian analyst would probably talk about parts of the personality that have been repressed: shadow personality, anima, etc. The bad guy is a personification. He feels neglected, is angry and wants to be heard.

Form this point of view personal development, what Jung called "individuation", involves developing and integrating ALL parts of your personality. Give your demon a hug!

On the other hand, it could just be something you ate ...

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