There is a tale of searching a contented man. A rich man wanted to find a contented man. So he wrote a poster and hang before his big building indicating that “This house would be given to the person who will prove himself as a contented man.” Within a few days a man came to prove him contented man with that what he had. He had some land properties and he was leading a happy life with his family. The person brought him to the house where he spent the night. But the man could not sleep at that very night. Because the decoration of the house was so much beautiful and the attractive design astonished him deeply. He thought that this house was more beautiful than that of his own and so he desired to decorate his own house more colorful than this. Next morning when the person asked him about his sleep, he could not sleep last night thinking again and again of the decoration of the house. Then the person realized that this man was not contented with what he had. So, the person did not give him the ownership of the house.
So it is proved that nobody in the earth is contented, so we should be happy what we have.