What is happiness?

It is really hard to define the definition of the word happiness becouse each person has own opinion about this word. Some people said that happiness means money but some said it is not money. There fore, I can give the meaning of this word as everthing arround people that can make them feel confortable with. For instance, some people are really happy when they were shopping and some are reall feel good when they have enough sleep. My Happiness is travelling with my family across country and having a nice big meal.