Happiness

salam and hello everyone!!!,
i'm radhi (a125839).. now, i want to ask your opinion about the happiness in life..
what do you think?,to me, first we have to define what is happiness because we see a lot of poor people, who don't have even proper shelter,clothing, are very happy and healthy. They are laughing, hugging and enjoying every moment in their life. How? and the same time we have seen even a lot of milionaires are unhappy, smiles never adore on their lips, every moment they spend in tense situation even in their bed when they are alone with their partners. Why? these, i am a lot of the opinion that happiness is a God gift. Only lucky people, whether rich or poor, are happy in this world. Nobody likes to lead a life which is filled with sorrows and unhappiness, we all like to be happy. So what we have to do so that happiness will be there with us...?
what do you think?

thanks!!.