Christensen teaches Harvard Business School students how to use management and innovation theories to build strong companies. But he also believes that these models can help people improve their lives. In this article, he explains his idea by exploring questions everyone should ask themselves. How to be satisfied with your career? How to make family life a constant source of happiness? And how to live life honestly? The answer to the first question follows from Frederick Herzberg's statement: money is not the most powerful incentive. The main thing is opportunities for learning, professional growth, making a contribution to the common cause and gaining recognition. This is why the job of a manager, if done well, can be the noblest of occupations; No other activity offers so many ways to find these opportunities. Management is not at all about buying, selling and investing, as many people believe. The principles of resource distribution can help a person achieve happiness in his personal life. If you do not competently manage the process of resource allocation in a company, the result will not be at all what was intended by the management strategy. The same is true in human life: if you don't have a clear sense of purpose, then you're more likely to spend time and energy on achieving the most visible and short-term signs of success, rather than on what really matters to you. And just as overemphasis on marginal cost can lead to poor corporate decisions, it can also lead people astray. The marginal cost of doing something “one-time” wrong can seem deceptively low. But you don't know where this path may lead you. You must clearly formulate your own principles and not risk your life and the lives of those close to you by violating these principles.