...they know how to survive and be happy with less

I fall into that category. We made the best with what we had, and although I thought it would have been nice to have a prettier wardrobe, I never longed for it. I was happy and content with my life because I was given an abundance of love, and that made me a happy person.
Helping others came naturally, and when we ran the B&B, hubby and I could help even more people. I learnt after hubby passed away, just how many people he helped without saying anything to me. People knew they could call on us for help; some still do, even if it's just for advice.
I see how some big earners are always buying newer and bigger; the latest cars, electronic goods, sports gear, etc, etc, yet they already have the best of everything. But sadly, they will turn a blind eye when someone else is in need.
I say yes to all your suggestions, and already implement some, but will strive for more!
We can help build a better place for the world around us.