IIN to talk to yourself constantly, as though you were another person?

I'm considered an Extrovert and I do this when I am alone. It keeps one's mind active. I work graveyard shifts so during the entire course of a shift (8 hours for me) I'll not talk to anyone. So I'll talk to myself and let my imagination wander. Although sometimes I catch myself actually thinking out loud and someone walks past me... you gotta work on that, Neuro.