To Popa:
Realize that you are an American Citizen (I am thinking) and you will come across many other citizens. Though you probably are not running for office, it is really not a bad idea to be polite and to smile when someone asks you how you are doing especially when they are about to perform a menial task to make your day get better. So if you want to be either shallow or peevish about how you smile at the rest of the world, that is your decision. I would think that being a light to the world as you are being a Jewish soul, you might want to consider whether your light is full and brilliant or if it is just flickering.