Hello kotomi,

Happiness as you are asking about is subjective and it means different things to different people.

There is
Mental happiness
Emotional happiness,
Family happiness
Financial happiness
Material happiness
Romantic happiness

And the list goes on, that is why it is subjective.

I totally agree that happiness is the abscence of sadness, but we can be happy about one thing and sad about another at the same time. So to define it is to examine what makes one happy and what makes one sad.

Hope you get some less confusing answers,

Rhiannon