Among the most prevalent myths about aging is the one that one day you wake up and accept you are “old”. Or that “old people” know they are finished, cruising the margins of life, bored and disinterested in anything beyond metamucil or Biotin! Not so fast. It still comes as a shock to me. I am the same age as “old people!” How is that possible? I am full of optimism and hope even in these complex times, my sense of humor is intact, I ride a spin bike every morning, do aerobics at the gym, lift weights and walk…