A person's happiness is not because he has more, but because he cares less. What does it mean?

This sentence really hits the point. A person's happiness is based on a rich spiritual world, not on the luxury of material life. People with a good mentality are often happier because they don't worry about unnecessary things. And often those who are willing to care about everything are unhappy. We live in real life and encounter many things every day. If we care about everything, then we will be really tired. Only by adjusting your mentality can you truly be happy.