should we make sacrifices to be successful? People commonly think that we should make sacrifices in order to achieve something in our lives. Even people who don't think we are participating in zero sum game believe that it is difficult to strike a balance between work and personal life. I decided to write a book to find out whether this idea is true or not. There were six people whom I came across. They were successful people who didn't sacrifice their personal lives. Some might be suspicious that they can succeed because they are lucky enough to be from privileged families. But they have suffered from frustrations in their lives and experienced a hard time. None of them are from rich family. Despite their high achievement, they have committed to people around them. They know their efforts to find a harmony between their personal life and work are important. There are three skills we can learn from them. First, be real. Knowing what is really important in your life help you find a balance between your work and other things. Second, be hold. You should know you can affect other people. Third, be innovative to come up with new ideas to find ways to have a good relationship with people around you.