" There’s a cure for aging that no one talks about. It’s called learning. In my mind, as long as you learn something new each day, stretch your personal frontiers and improve the way you think, you cannot grow old. Aging only happens to people who lose their lust for getting better and disconnect from their natural base of curiosity. “Every three or four years I pick a new subject. It may be Japanese art; it may be economics. Three years of study are by no means enough to master a subject but they are enough to understand it. So for more than 60 years I have kept studying one subject at a time,” said Peter Drucker, the father of modern management who lived "

― Robin S. Sharma , The Greatness Guide: Powerful Secrets for Getting to World Class