" Just as there will be a final occasion on which I pick up my son - a thought that surely appalls me but one that's hard to deny, since I surely won't be doing it when he's thirty - there will be a last time that you visit your childhood home, or swim in the ocean, or make love, or have a deep conversation with a certain close friend. Yet usually there'll be no way to know in the moment itself, that you're doing it for the last time. "

― Oliver Burkeman , Four Thousand Weeks: Time Management for Mortals