Sometimes boredom is not satisfied, then let the smile remained. Keep smiling ... even if it does not make us feel much better. (I do not think it would be in the form of "words and letters" but I have always meant).
Sometimes that disgusted not satisfied, ask for a smile still keep smiling to them ... even if it didn't make me feel much better (not discouraged that it will be in the format "the words or letters" last meaningful date)
Sometimes the sick are not satisfied, then let a smile is still smiling; the ... even if it doesn't make us feel much better (not that it will be in the form "words or letter." They are always meaning).