A teacher gave each student a balloon, who had to inflate it, write their name on it and throw it down the hallway. The teacher then mixed all the balloons Students had 5 minutes to find their own balloon. Despite an active search, no one found her balloon. At that moment the teacher told the students to pick up the first ball they found and hand it over to the person whose name was written on it. In 5 minutes, everyone had their own ball.
The teacher told the students, "These balloons are like happiness. We will never find it if everyone is looking for their own. But if we care about the happiness of others... we will find ours too.
