Chatting with GPT, he said that there are three types of true happiness and deep satisfaction in modern psychology, which is very interesting: 1. Meaning: What you are doing aligns with your values, and you feel that 'this is worth doing'. 2. Relationships and connections: You have genuine emotional connections (intimacy, trust, love) with others. 3. Growth/flow: When you are doing something, you are fully focused, forget yourself, and have a sense of involvement (flow). Many people may experience temporary happiness when pursuing material, stimulating, or fleeting pleasure, but not deep satisfaction.