I never talk to myself.
I'm already aware of what I'm thinking without the need to have the right brain talk to left brain.
Though, I'm often pre-phrasing what I will say or write.
Like here, to make this post, I thought and decided in my head what I would wright before doing it. (though, it's normal to know what to write before doing it
)
In my head, instead of conversations, I've a Mental-Jukebox. it's far better