As we all know, happiness is very important to everyone of us, a happy person is always pleasant and full of spirits, he is always ready to help others, on the contrary, an unhappy person is always gloomy and full of complaints, he is never satisfied with anybody or anything.
In addition, almost every happy person prefers to make friends, nevertheless, there are large numbers of unhappy person has [persons have] no friends and they are always feeling lonely. But I think it is quite easy to solve this problem for unhappy. For instance, loving our life and enjoy it. Try to live pleasantly and be always at ease, maybe you will find the world is filled with real happiness. In a word, in my opinion, it is the best important thing to get happiness.
All in all, to be honest, as long as I am doing something for the good of others, I can feel happiness, because I supposed[suppose] that happiness is a satisfaction for our life.