Here’s a curious thing about talking to yourself. You can literally perceive words inside your head. But who’s talking? Who’s listening?
When you talk to yourself, figuring out who’s doing the talking and who’s doing the listening gives you a taste that everything is all tied together, though they may seem separate. Who’s asking? Who’s answering?
This is very much like the question "who owns your soul?".
It’s all a single process.