Success is not about finishing everything you start. It’s about knowing when to grit and when to quit. 235 studies: When people adjust their goals a… - Adam Grant

Who you are should be a question of what you value, not what you believe. Values are your core principles in life — they might be excellence and generosity, freedom and fairness, or security and integrity.

Some people, when they do someone a favor, are always looking for a chance to call it in. And some aren’t, but they’re still aware of it — still regard it as a debt. But others don’t even do that. They’re like a vine that produces grapes without looking for anything in return . . . after helping others . . . They just go on to something else . . . We should be like that. — Marcus Aurelius, Roman emperor A

I might add that it doesn’t become the truth just because you believe it. It’s a sign of wisdom to avoid believing every thought that enters your mind. It’s a mark of emotional intelligence to avoid internalizing every feeling that enters your heart.