Speaking as someone not totally young, and (hopefully) not totally un-smart, I think its true one mellows out with age, also you can "be the change you want to

Speaking as someone not totally young, and (hopefully) not totally un-smart, I think its true one mellows out with age, also you can "be the change you want to see". That to me is the only thing we can do. If we all do our bit we can make things a bit better. Some people can make a disproportionately large positive difference. Its never too late to do that.