This is all crap. First of all, what exactly is Happiness? How do you define it? Does it depend on the person being happy or on other people? Is happiness comparison/judgement in relation to something? How one know other people are happy or better how one knows he is happy?

Is happiness stimulation? is it some kind effect ? or some kind result of something else? is there some kind motive, direction, desire or feeling of some kind achievement in Happiness?

When one is said to be happy? what exactly is the mental state at the moment of being happy? Can one be happy and know it at the same time? Is happy some kind remembrance/experience of some past events or fulfillment of desire?

Recently i read one news from from Brazil, who killed many people (40 i think). Finally he was arrested. He said he is restless until he kills some body. He felt relaxed and happy after killing people ( he said it). Is that happiness? If he says it is happiness is there any meaning for other to question it.
All the people are after some kind runway happiness and they get it in various degrees. If some people are always happy (does he always feel happy? is it possible?) then how he recognise he is happy? Does other people guess he is happy seeing his teeth or some other activiteis?