There’s an old story about an elderly man who was on his death bed, surrounded by his loved ones.
They asked him about his greatest regret. He responded that he’d wasted a lot of time trying to change things that weren’t in his hands.
He’d tried to change the world, but had found it too big. So he decided to focus on trying to change his country, then his village, then his family.
It was already too late when he realized he should have mainly been working to improve himself and become a better person throughout it all !