When there is darkness,it is useless to curse the darkness.The only sensible thing to do is to light a candle,and thus do what little we can do to remove the darkness.Similarly when there is unhappiness and misery,we should not curse the unhappy situation.Instead we should do something to lessen the misery of the people.If every one does something to alleviate the  sufferings of the people,the world will be a happier place to live in.