As there are many people on the world, there are different ways leading to happiness. Especially, however, we feel happier when we take lead at our own life, when we have a good relationship with others, and when we find ourselves more developed. Then, right now, am I writing happily? If I write spontaneously, interact with readers, and can feel my development, I could say that I am really happy. Anyway, I am making an answer hard.