Once Upon A Future Time: A Note to the You Who is Me at One Hundred

Very few people have made it to the 100 year mark. Even today with countless medical and technological advances turning the world upside down, waking up for 36, 500 sunrises is still a feat not shared by most. So what would the you of now say to the you of then? Are you the same person? Or is life lived in segments by different people sharing the same name and same DNA? This is one letter. My letter. To the Me of Then, should I ever reach that remarkable age.