Let’s say that your life hinges on three events. These three major events shape your entire life. But what if your view of each event changed periodically. Whether it was good or bad. In hindsight, you create different realities. You reshape your current reality based on your view of these three events. But if the impact of these events changes, you change.
Let’s just say that your events have only one quality: good or bad. With three events, each has two different states. So that you have eight different potential states of your current self based on your views of these events.
If if you have eight different potential present selves, you have eight personalities.
If this theory is correct, the key to overcoming the disease would be an objective view of all three events. The truth to whether each event was either good or bad. That is the true self.