Ok so 1-4 in your link...is a voice telling you this? That could be a auditory hallucinations then but it sounds like you see it as part of yourself and not external. For me I had voices both inside my head and outside just like hearing...the outside ones are characteristic of schizophrenia and other psychotic disorders but can also be caused by medical conditions. The inside ones formed distinct personalities but I did not consider them to be me but thoughts telepathically communicated to me. Now your alter ego do you consider it to be part of you like another personality or like another person entirely. People with dissociative identity disorder also hear voices but they are complex internal voices complete personalities that can in some cases take over for the main personality. Both sz and did are very serious but talking to a psychiatrist rather than a therapist is how you're going to get this sorted. If it is sz then meds are an effective solution for a lot of people...the point is you can get better and back to functioning well. You might also want to cross post on the dissociative identity forum to see if they might have better advice...