The definition of happiness varies from person to person. Most people believe that earning a lot of money and living the comfortable life are the symbol of great happiness. It is true that making great achievement is our target, so we work so hard to realize our goals. But as we grow up, we realize the different definitions of happiness. When I graduated from college, the job I chose was far away from home. I never thought about the distance between me and my parents. But in the first year of...