17 is a Good Age - Experiences from My Teen Years

Seventeen is the age when I felt like a fully grown adult. Anything after that felt like excess years without any new development. Those last few years of high school are when your personality crystallizes into what it will be for the rest of your life.

From episode 77 of The Tim Weichselbaum Show.

Full episode: https://www.youtube.com/watch?v=eS9MxtdVqxI