1. No disaster is greater than not being satisfied, and no fault is greater than desire. Therefore, contentment is always enough. ——"Laozi"

2. When we dare to do evil to satisfy our humble expectations, we lose our nature and are no longer ourselves. ——English Renaissance playwright and poet Shakespeare

3. I learned to practice what I call - "constructive dissatisfaction." ——American advertising master Leo Burnett

4. The biggest obstacle to happiness is expecting too much happiness. ——Fontenelle

5. Be content but not greedy, know restraint but not be promiscuous. ——The reclusive poet Lin Bu of the Northern Song Dynasty

I hope you will adopt it, thank you!