Who Are You at Your Best? Workwise?

When you're at your best, who are you? I distil that into one word. E'r going to challenge you to do a word or a phrase. For me, it's athlete. Another great greek word with little lines over the ease. It means one who is in a competition for a prize. And i want to be 50 and four years, right at 75. At a hundred and one, god willing, i want energized longevity. Boom. That's my identity.