Are you sure this is done? The last stanza is...missing something...
That said, I like this piece. The multiple personalities thing is a good way of describing the way that we act in different situations: it's like we become different people depending on what's going on around us. Interesting phenomenon... I've got a few voices in my head, myself, so know you're not alone there.
Anyhow, if you a) explain the last bit or b) fix whatever may/may not be missing, I might be obligated to add this to my favorites.