Storyonce in a forest lived very strong lion. One day while lion was sleeping under tree a mouse came and started playing near him. Few minutes later mouse started to play on lion's body and pulled lion's whiskers. Lion woke up because of this and caught mouse in his hand and was going to kill it. As lion was going to kill it, mouse apologized to lion and requested him to release him. Lion felt pity on him and set him free. Mouse was relieved but before leaving mouse promised lion to help him in need. Listening to this lion laughed and said, "You are so little, how can you help me?" Laughing, he let the little mouse go. Few days later while mouse was moving around he saw same lion under a net. He went near lion and saw that lion was badly trapped because of that net. Mouse said, "Don't worry sir, I will help you." And then mouse started to cut net with his sharp teeth. Soon lion was freed from net. Lion was happy and thanked mouse for his help. After that they became very good friends. 
We should not give up even in worse situations and think about solution. If there is someone stronger than us even then we should look for solution because mental strength is more powerful than physical strength. 