just don't!
does a smile is very important? but what if its not the real one? why should people have to force themselves to smile? Then it becomes useless. I know now why some kind of people doesn't smile a lot, because they mean it. But some people from out look are very happy and chilling acting like they are enjoying life. Instead, they are suffering no ending! if you can't smile, don't! if you can't laugh, just don't! if you don't want to thing you don't like, just don't! if you don't want to say yes, just don't! Life is too short!