I always say that the times in my life when I've been happiest are the times when I've seen, like, a sunset.
As I get considerably beyond the biblical allotment of three score years and ten, I feel with increasing intensity that I can express my gratitude for still being around on the oxygen-side of the earth's crust only by not standing pat on what I have hitherto known and loved. While oxygen lasts, there are still new things to love, especially if compassion is a form of love.