Are you radically different than your younger self? Are there key elements that have stayed the same? Most parts? Do you feel as if you've followed the "roadmap of life" or forged your own path? Have there been "chapters" or do things all sort of slide into one contiguous flow? Share what you'd like!
They always played up that anyone can learn anything at any age but it really does get harder as you get older. I'm not sure if it's because of obligations, the juices slowing down (less plasticity), or just having less of a feel for it. Kudos for the fitness and cheers!