A lyric from the song “When you are smiling,” says when you smile, the whole world smiles with you. I am not sure about the whole world but smiling usually brings a smile from the people around you. Smiling is a simple thing to do, but it has such a profound effect on others, so smile.
Life can be difficult, but it is good. As the saying goes, “where there’s life, there’s hope,” so smile.