If someone asks me，“What is happiness？”I will answer，“Helping others is the source of happiness.”Man can not live alone，so we should try our best to help others as much as possible. I always believe that spiritual happiness is more important than material happiness. Spiritual happiness is a feeling that everyone can get if he is willing to devote himself to doing something meaningful all his life. In my opinion，happiness is that making people around me have a nice smile on their faces all the time. One day，on my way home，I saw a badly injured dog lying on the street. I rushed to it and took it to a veterinary nearby. To my relief，it recovered after several days. And now we‘ve become good friends.