What to do if I have multiple personality disorder?

Do you have this. Condition or are your worried that you do. Would recommend that you see a psychologist or a psychiatrist for a comprehensive evaluation. A treatment will be developed for you depending on the specific findings. Take care.
Multiple personality. Get yourself evaluated by a seasoned psychiatrist IMMEDIATELY. Do not attempt to diagnose yourself, especially with such a serious diagnosis. Also: do NOT believe everything you read about MPD, now called dissociative identity disorder in the popular press, which tends to sensationalize, and even glorify the disorder. There is nothing whatsoever glorious about it. It is also extremely rare.