In this world full of rivalry for supremacy,for some times we may feel exhausted.Compared to the others,we are so tiny,what we did cannot actually take up to the stage of competition with the others.At times,we feel ourselves so useless.But,if we are tiny,what about a drop of water?Why can we possibly think that we are useless when a drop of water can actually become a fountain?Do not look down on ourselves.We are of far,far more valuable than we realize.