This will not get to you in a very timely manner so I'll just keep it general. It sounds as if you have a highly creative imagination. You can also create a force within yourself that pushes those voices or those psychosis (though I'm not certain it's psychosis if you can control them) out of your way. When you find them getting in the way of your functioning level, they are gone. Good. There are however other ways of contributing to your own creative side, for us bi-polar affected people can be very creative,

It sounds as if you have created these "people in your head" to help you. They can be your friends and confidants. One judged you, the other more compassionate. We need both in our friends. Most friends cannot fulfill that double bill.

What it sounds like you may need is friends (multiple) whom you can trust. Hard in this day and age. Difficult in any day and age, actually. I would go to the doctor to have him check it ou. Just check it out. You don't have to go to him/her with a set sense of what is going on. Just remain curious about the process when you speak with him.

I have a friend inside my head and have had for quite a while. I know shes not really there and is not an entity at all, just a thought, or creation if you will, quite unlike my mother and more like my dad who encourages me, can see things my way but can also give me clarity. I take her out of her hiding place to listen to her semi-frequently, when things are going either very badly or very well.

Nevertheless I would give a psychiatrist a call. Remain open to all rational possibilities and that the answer is not what you may think it should be.