How to be happy?

Our lives today are much busier than our fathers'. A day passes by with many experiences which may be sad or happy. But how many of us can spend time, even just a moment, to ask ourselves, "How to be happy?" The question which at first seems easy to us then becomes more complicated to us. The problem here depends on how we define the term "happiness". Some people will say, "Happiness? Well, it is …

…good relationship with people, doing useful things and not having anything to worry about. All in all, life is just a span. We should not waste a minute doing useless things. Don't ask others to do for us, but ask what we have done to others. Only when we make people happy does happiness come to us. At last, if we do all these things, we will have a happy life, a happy life forever.