One day, 100 people were attending a speech. The speaker was making a speech about happiness. However, after a few hours, people began to lose their attention. The speaker thought of an idea. He stopped his speech and asked all of the people to take part in a group activity.
He gave each person a balloon in the room. Each person was asked to write his or her name on the balloon with a black marker (记号笔). Then, all of the balloons were collected and moved to another room.
The 100 people were then let into the room and told to find the balloon with their own name 
Everyone rushed around, crazily searching for their own balloon. People were bumping into and tripping (绊倒) over each other.
But after about five minutes of searching, no one could find their own balloon.
After seeing this, the speaker asked each person to collect a balloon and try to find the person, whose name was written on it. Everyone started talking to each other and asking each other for their name. In just a few minutes, everyone had his or her own balloon.
"Can you see what happened?" the speaker said. "The balloons are like the happiness we look for in our own lives. Everyone is busy looking for their own happiness, not caring what happens to others. But sometimes the best way to find happiness is to help others. Help them find happiness and you can find your own."
