If you move away and then make new friends and sort of become a new person (!), you might at first think this is just who you are now. But then you visit your parents… and suddenly you feel and act a lot like you did before you moved away. You might even try to hold onto this “new you” with them… and they might respond to what they see as strange behavior by trying to nudge you into acting “normal”:
worth tying this into the subject object transition of the kegan stages of development. See here—meaningness.wordpress.com/2015/10/12/developing-ethical-social-and-cognitive-competence/ for a summary.
We become different people as we grow. We can hold different personas for different situations and experiences.