Sometimes, it's hard to decide whether a person is successful or not, because there are many criteria, such as the money one earns, the achievements one gets. In reality, some Americans judge success by the length of their vacations. The man who gets a month's vacation each year considers himself more successful than the man who gets two weeks. Many people want to be teachers because it is teachers who can get a three-month vacation every year.Some college teachers who teach three classes consider themselves less successful than those who teach only one or two, or none in all. In short, the less work Americans do, the more successful they consider themselves. In your opinion, what is success?