Oh, I just thought of something else too, humans are shape shifters, now that you mention the word shape. We are not even made out of the same cells we were born with. We are always shedding them, and rejuvinating new ones. Our minds are similar, they are always changing, I am always changing.
Who I am is always changing, so there really is no answer, to me. Maybe you are a human shape shifter. Not a bad thing to be.