The advantages of smiling are very obvious .As a song sings "Show your smile once a while,even for pretend,you willfind(that) head held high,you are happy in the end" smiling can make one feel happy and then call influence the peoplearound us.It is the simplest language in the world.people from all over the world can understand it easily.
Ourparents and friends know that we are feeling good when they see us smiling at them and they will feel happy for us,too.I smile at myself sometimes to change my mood,and tell myself there is nothing to worry about .
In a ward,I want tosmile since it costs.nothing,but is everything是什么意思