【答案解析】[参考范文]

In our lifetime, we can never be plain sailing. Life must be full of difficulties and setbacks. When we are facing with such a disappointing matter, don"t get frustrated. If we draw lessons from failures, in most cases we will achieve success in the future.
Beethoven is a good example when facing failures. His success in creating Symphony Nine was on the basis of several times of failing attempt. It"s failure that reanimated his determination to succeed. The failure that gave him a lesson benefited him greatly, even in his whole life. Contrary to Beethoven, some people think failure is a heavy blow that they are not able to endure because they lose chances to achieve something. When they meet failure, they will be seriously dejected and can never pluck up their courage to try again.
Let"s remember an old saying "failure is the mother of success". When we see failure, we should believe that success is not far ahead. If we hold a positive attitude towards failure, we will overcome difficulties and frustrations to win victory.