There was once a beggar who was always happy. The king saw him and wondered why he was so happy because he was so poor. However, the king could have whatever he wanted; yet he himself was not happy at all. Thus we can see one's happiness doesn't depend on whether he is rich or poor. Happiness is a state of mind. As long as one thinks he's content and satisfied, he is happy.
As everything exist only because its opposite , happiness exists only when pain exists. Just as a person who does not know failure never knows success, a person, who has not experienced suffering or sadness never knows what happiness means..
Happiness always promises a hope by which people go on living. When they come to the point of losing hope because they have suffered a great deal, it is often the time when happiness comes that will give them the courage and desire to live.
Cheer up and be happy. Happiness is not far from you. It's just around you. Try to grasp it and enjoy it.