The whole of life is a phase - one in which we reinvent and discover ourselves again and again. We need to find out when you are closest to yourself. So I claim that I am always myself. It is the development with the years and events that reshapes me every time.
I wouldn't travel back to change anything. All that happened because action was taken and reacted. An action is followed by a reaction. Over time, I just would have liked to have hurt fewer people.