What's happiness?

What is happiness? I think that happiness is to be thankful. To be thankful for the things you have. In the twenty - first century some people have everything they want, but some don’t. When they get something, that they really want and need, their smiles are bigger than ever. They're thankful. I haven't got the most expensive things, but I'm happy with what I have. And peoples’ smiles make me happy. When you help someone, it gives you satisfaction. Everybody has different thoughts. I just mean and feel this. This is what happiness is to me