It is an important philosophy of life and a great wisdom to be grateful. No one can always be lucky and successful in his life. Faced with all kinds of failure and misfortune, we should be generous and brave, and try to solve these problems. When we are trapped in difficulty, should we complain about it and become frustrated or should we be grateful for our life and start again after falling down? If you are grateful for life, your life will be full of bright sunshine. On the contrary, if you always complain about life, you’ll gain nothing finally.