Once a shepherd while grazing his cattle in the pastures happened to be seen by the king of that kingdom. The shepherd was in a jovial mood.
When the king asked him the reason of his happiness, the shepherd without knowing that he was the king said, "Shouldn't I be happy? I am happier than the king of our kingdom."
When the king asked him to prove this, he replied, "I have the wealth of this nature. The sun gives me warmth and light, the blue sky pampers me and this valley gives me peace of mind. I have enough money to live a comfortable life. Now tell me, does the king have so much wealth?"
The king realized that the real wealth is not money but the peace of mind.