I wonder, is there anything you do, listen to or watch that connects you to your younger days, prior to being 15 years old?
I believe that I was watching basketball with my dad before I was 15 year old. Also I started watching anime in particular dragon ball/dragon ball z and samurai X as a kid. These days I don't watch them always but sometimes I still watch some reaction to dragon ball or samurai X. I still remember that sometimes I was rushing to get back from school soon enough to watch samurai X.