Ever since I was young, I'd talk to people in my head (or sometimes out loud if I was alone). The other person doesn't usually say much: yes, no, why, etc.

I talk to my T all the time. I use it to prepare for a session, to try to process something on my own, or just to bring myself comfort. I just last week admitted to T that I do this. We didn't talk about it, but she did seem a little surprised.

I've done this for as long as I can remember, so if it's unhealthy, well... Oh well. There's worse things then talking to someone who isn't there.