How does one find happiness?
My answer to you is that happiness is only bestowed upon those who work hard for it. I don't believe internal happiness is something easily grasped. We all have to find happiness on our own. Many people feed off of others happiness never working towards their own. Of course you can laugh at a joke, smile at a stranger, or even feel good because of an outside experience. But if you don't already exist in bliss, you'll return back to, as I like to call it: "going through the motions". Sincere happiness only exists in those that have labored to embody love. Becoming love, so that they may share the best version of themselves with the world. In this aspect they have obtained the characteristic of profound internal happiness.