Sometimes I’d rather be a tree frog. I don’t think they fall asleep worried that they’ve been a bad tree frog that afternoon or envying kingfishers or resenting their own diet or habitat. They just seem to spend 100% of their time being magnificent at being a tree frog. We spend most of our time regardless of our religion or lack of it, disappointed in ourselves, ashamed of ourselves, envious of others — always becoming and rarely being.
— Stephen Fry on Quora (here)