Keep contentment in your heart. As the saying goes, contentment is always happy. Only those who know how to be content will become happier and happier. Don't envy others how high they got in the exam, but see if you have made progress compared with the last time. Don't compare with others. When you see those beggars in the street, do you still compare food with others and famous brands? Don't be jealous of how rich other people are. You have a family that loves you. This is the greatest wealth in your life. Contentment is always happy, and contentment is always happy. Contentment is indispensable to life.