For me there’s two separate participants, a ‘talker’ and a ‘listener’. My mind identifies more with the talker, because that’s the one that has agency. Since there are two participants, both of which are me, I talk in 1st person plural (‘we’ve got to do …’, 'we thought about this earlier’). I stopped being afraid of being alone after I started having an internal dialogue around the age of 11, since having a second participant in the conversation meant I was always in company.
Edit: Wow, looks like there’s a lot more diversity in this than I was expecting
It keeps telling me to feign the emotions and facial expressions that is most suitable for the conversation.
Since I can remember, It’s helped me learn appropriate facial expressions for different occasions; by watching other people. My wife says that my inner voice is dark, and not normal for others.
I honestly don’t understand why others are happy, sad angry et al.