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I'm striving to learn a new language, improve at chess and olympic weightliftingNot that my opinion matters, but I think those are fantastic goals to strive for. If it's making you happy to challenge yourself, go for it!
THAT is exactly the purpose I'm talking about vs. someone that doesn't try at anything and doesn't have any idea what they'd like to do, or achieve, or improve in the next 10 years.
> I hope that I can find something in my career that fuels a burning desire like some of the SpaceX employees
I've accepted I won't find that kind of career, so I to do it in my outside life (like you are!)