Me and the other me

I am a very complex vessel. One brain, but many souls inside of me. There are no masks, only different personalities. They even have their own names.

Don’t you ever feel like a different person? How can you explain it? Mood? 
I became an Schizophrenia individual with more or less a decision of become crazier.

The sad guy is taking the lead. The extrovert is just going deeper in forgiveness. What other souls are hidden?