1 Being grateful is an important philosophy of life and a great wisdom. It is impossible for anyone to be lucky and successful all the time so long as he lives in the world. 2 We should learn how to face failure or misfortune bravely and generously and to try to deal with it. 3 If so, should we complain about our life and become frustrated and disappointed ever since then or should we be grateful for our life, rise again ourselves after a fall? William Thackeray, a famous British writer, said, 4 "Life is a mirror. When you smile in front of it, it will also smile and so will it when you cry to it." If you are grateful to life, it will bring you shining sunlight. If you always complain about everything, you may own nothing in the end. 5 When we are successful, we can surely have many reasons for being grateful, but we have only one excuse to show ungratefulness if we fail.