Sometimes the voice in my head is just me. It is my random or focused commentary on my circumstances, relationships, my performance, or my emotions. But I have found that I start talking to myself, referring to myself as "you," I am likely getting on a bad path. Whether justifying or condemning myself, it is not good. Of course, if God is addressing me, I will know it and he always brings conviction rather than condemnation. Now, if I speak in second person, I ain my "you" at God, making my inner conversation a conversation with God.