As part of mindfulness meditation, the Buddhists talk about trying to maintain an "inner smile" throughout life. Though there are situations where it may not be appropriate to laugh, such as at a funeral, or, when one's teacher or boss is giving bad news or scolding someone about their bad performance, etc, having an inner smile should help in almost all situations
I do remember being mis-understood in quite a few situations right after I began listening to the Resiliency course. Even recently I was pulled up at work for "being too relaxed".
I just think it is what you do in the long run that shows, and matters
