Grapes are sour

One day a fox was walking through a field by a bush. He was very hungry and was searching for something to eat. After a long walk he came to a vineyard. The vines in it were laden with fine ripe grapes, which were hanging in bunches from tall poles. The fox thought, I shall have a good dinner now. "If I can jump high enough, I shall have a good many of them." Thinking so, the fox began to jump but could not manage to reach the grapes. He jumped the more tired he became. But he did not have a rest. Being frustrated, he kept looking at the grapes with greedy eyes. After some time he began to jump again but the grapes were out of his reach. When he saw that it was useless to try any longer. He stooped making attempt. As he went away he said to himself. "Grapes are sour and not worth eating." sometimes we do same thing but we shouldn't do it. We have to run our work because failure is the pillar of success.