When someone asks me if I'm happy, I don't know what to say. I have no reason to be sad, but what is happiness anyway?
Some synonyms are, fortunate, cheery, content, untroubled, delighted. But some of that isn't true, Fortune doesn't always make you happy, and untroubled is that way too.
The best way to be 'happy' or thankful for having life. Is to go through struggles and overcome the temptation of a knife.
When someone asks me if I'm happy, I say that I can be. I have seen enough pain and sorrow to cherish every good thing.
I still don't like the word happy all that much. Grateful and content are much better to describe my feelings.