I often have internal monologues where i fantasize a conversation from the past and what i would like to have said. This was a plot of a Seinfeld ep where George acted out his fantasy. I so HATE to have anything in common with George, so detest him! And yet we most strongly dislike the parts of ourselves that we dislike and recognize in others. Ack! It's mostly me talking in the fantasies. I've done this all of my adult life. It's not necessarily bad, it's indulgent and not productive but it passes the time and no one gets hurt.