Some said that "happiness" is not what we can give away to the others; we have to create the happiness of our own. The happiness is at heart. When we 're happy, we're happy. (what an indistinctive sentence!!!) Nobody cannnot force us to be happy. This is why the sweety blessing words like "BE HAPPY" or HBD---HNY is nonsensical, meaningless and adsurdic , according to that cruelconcept of happiness.
This happy theory used to be cool to me as it did broaden my views on human life.
Now , i however don't agree with that mean idea.
I strongly believe that happiness can spread among us. When you're happy, it's absolutely possible that i would be happy too. Just like a virus, happiness is infectious.