Life is full of stress. Your philosophy is full of entertainment and knowledge. Philosophy of life is bit like the flow of wall's watch. It reaches every digit again and again but you can't bring back the passed moment. Life is also like that You spend your happiness and difficult times, happiness and stress comes again and again with different layouts but you can't bring back the same happiness/day/time. That's why elders suggest. "Do your best to stay happy & make people happy".