Finally, when doing a part-time job, students can earn money by their own so that they can grow up. Why can people grow up in this way? Students usually spend their parents’ money, they do not have to work hard so they hardly know its value. It’s not until they have to try their best that they set much value on their parents’ money and long-lasting effort to bring them up. When they have to work to earn money for themselves, they will sure find how difficult it is. Furthermore, young people have to deal with many awkward cases that require them to react quickly though sensibly to get the best result. Such environment of work does not allow youngsters to be childish, indeed, they need to grow up in their thought and their action to adapt to the world of adult and business.