I talk to myself, but I don't establish characters with which to do so. This is disconcerting. It is one thing to rehearse impending conversations in our head or criticize ourselves. It is another matter to have conjured up make believe persons. Of what I am sure about is that you are not alone here. My recommendation is to seek out your psychiatrist and be honest about the degree to which this is happening.

I encourage you to ask yourself the same question from the point of view of another. What advice would you give someone else who is experiencing this?