When I was 30 I was much closer to teenage-self than my current 42 year old self.
Lots of years insulated, gaming, doing what works for me.
I've grown much more in the past several years, raising kids, dealing with having a wife showing signs of a personality disorder, working and burning out.
I don't recommend following that as a model, at least even odds I'd have killed myself along the way, it was just too taxing and dangerous.
What I think I learned is that we need a mix of old-school toughness and contemporary self care.
Willingness to put ourselves in situations that stretch us is important. Just as important is willingness to expect kindness towards ourselves and from those around us.
_________________
"Stress happens. It can be a stimulus for growth. It can plough you under if not offset by rest. I strongly recommend checking out
Peak Performance by Brad Stulberg and Steve Magness,
on Audible."