As an ancient saying goes “ man’s nature at birth is good”, everyone is born with a kind heart. However, time and environment can change everything. When being a baby, you almost want to eat any food. Even though you are already full, you still eat as much as possible. One day, you go to kindergarten. You have got a few kids as your good friends. But it seems not enough. You want each kid to be good to you. Then you become a pupil. As head of the class, you also have an ambition to be the king among all other boys in the school. While in middle school, you work hard to be super scholar. However, to be cool before girls is also your goal. In college, you try to become a member of the student union and quite active. Another bigger goal is to get as many certificates as you can. After beginning to work, both raise and promotion are what you want. Some day, you have a family. You want to enjoy the prestige of having a beautiful wife. At the same time, you hope she is a good wife and devoted mother, who can deal with all chores. With time passing by, you are getting old, but still very greedy. You expect big things from your children. You desire to live longer. Even on the day you go to heaven, you are still a greedy guy. A decent funeral ceremony is needless to say. a valuable land with a good geomantic omen is wanted for your sleeping forever. You see, from the moment you come to the world to the day you are gone, you are always greedy, even getting more greedy every day. So how to deal with greed? Especially in current blundering society. The key is mind-set. Good mind-set can make a simple, calm and happy life. But easier to say than to do, for the surroundings greatly influence you. So learn to be grateful, be content and try to keep good mind-set. Then you can live a better life.