Theadvantagesofsmilingareveryobvious.Asasongsings"Showyoursmileonceawhile,evenforpretend,youwillfind(that)headheldhigh,youarehappyintheend"smilingcanmakeonefeelhappyandthencallinfluencethepeoplearoundus.Itisthesimplestlanguageintheworld.peoplefromallovertheworldcanunderstanditeasily.
Ourparentsandfriendsknowthatwearefeelinggoodwhentheyseeussmilingatthemandtheywillfeelhappyforus,too.Ismileatmyselfsometimestochangemymood,andtellmyselfthereisnothingtoworryabout.
Inaward,Iwanttosmilesinceitcosts.nothing,butiseverything是什么意思