I think happiness is a kind of feelings such as love, satisfaction, pleasure and enjoyableness. In my opinion, the happiness plays an important role in our life not only in the past but also in the present and future. There are a lot of ways to create happiness such as a good family, people take care the others, the love of you and your companion and something else.
In fact, yes! Happiness is one of human beings feeling and I think people just only have happiness when they are satisfied by something in their real life (some of them are concrete and some of them are abstraction). For example, one family is very rich but they don`t have happiness because there`re a lot of argiments when people meet the others while another family is not rich but they have happiness just because they know how to take care the others. It`s not almost general, just an example of my happiness definition!
Hope people enjoy this topic and my extended definition!