A lot of masterpieces are done by 30, whether it's founding FAANG, the theory of relativity, Bohemian Rhapsody, etc. I've always found it interesting that these people do so much with so few resources, then when people like Einstein had the freedom to do what they like, they couldn't outdo what they did in their earlier years. You'd think that with more experience, money, and connections, they'd be besting themselves again and again.

The candle that burns twice as bright only burns half as long.

Unless you make the candle out of better materials.

Eh, I’ll go ahead and trust that life is about as long as it needs to be. Any “things of note” apart from genuinely helping someone else out on their journey when you had a shot is totally irrelevant from the broader perspective.

The part where "you have a shot" is crucially important. Otherwise, if all people do is help others to help others, you have a circular system where nothing is done.

If all everyone does is help others, you have a circular system where everything is done.