Sorry but I don't understand this.
The whole "what doesn't kill you makes you stronger" meme is meaningless. Challenging one self to get pain and pretend you will feel better after is a pointless way to live life.
There is little point in climbing mount Everest. It's good for your health to practice physical activity and to occupy your mind and time. But this constant idea that we have to challenge ourselves, while we can't manage to fight inequality or climate change, shows that we're deluded.
Climate change will be the new equalizer. The right to emit co2 will be the new currency.