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
If I’m awake late at night, thinking of an uncomfortable conversation I need to have with someone I can have an entire conversation with them in my head knowing mostly how they’ll reply and the best response to it.
I guess it’s like I’m two people talking 1 is me the other is me with that other person’s personality.
Other times it’s like my anxiety is giving me a hidden vision to scare me slightly at the look of my phone on the edge of the table falling over, and I instantly decide to move it. I guess that part is why I’m afraid of heights, cause my Anxiety tells me I’m going to fall. Also why I can’t watch Horror movies, my anxiety latches onto those gruesome deaths and spends decades reminding me of it when I’m in a similar looking area.