Have you ever seen the sharpness of a sword? The sharpness of the sword is the result of repeated polishing; Have you ever smelled the fragrance of plum blossoms? The fragrance of plum blossoms is exhausted after the severe cold test in December. The same is true of people. People who have achieved success in history have been honed through difficulties and setbacks. The famous Russian physicist lebedev put it well: "A calm lake will never make a keen sailor; Comfortable environment does not make a great man of the times. "Of course, the spirit of perseverance in setting goals is not contradictory to the practice of being flexible, adjusting goals in time and changing the direction of behavior in time. Because people often have a process of understanding their own and external environmental conditions, when they encounter setbacks, after calm analysis, if they confirm that the original goal does not meet the subjective and objective conditions at that time, they can also make appropriate adjustments. Many successful people also have this experience. For example, Li Shizhen, a famous medical scientist in Ming Dynasty, tried to be a juror three times and failed three times. Later, he decided to study medicine, and finally wrote the Compendium of Materia Medica, which has been passed down through the ages. Sima Qian, an outstanding historian and writer in Han Dynasty, was originally an official. He was a doctor at first, and then his stepfather served as Taishiling. Finally, he offended Emperor Wu of the Han Dynasty by defending the important mausoleum that surrendered to the Huns. He was not only imprisoned, but also imprisoned. Under such setbacks and blows, he turned to writing with indignation and finally wrote Historical Records, a great historical and literary masterpiece. On the road of life, disabled youth often encounter difficulties, setbacks and pains that ordinary people can't understand. In this case, the weak are depressed, and only the strong can stand upright. Gao Shiqi, a famous popular science writer in China, suffered from encephalitis A at the age of 23, leaving a serious sequela. Since then, I have been paralyzed, my head is stiff, and my movements are difficult. 1978, a serious illness completely destroyed his speaking ability. However, he was not conquered by his disability. He stubbornly overcame countless difficulties caused by illness and disability, persisted in writing with trembling and contracture hands, and worked hard one by one, finally completing the creation of more than one million words. Zhang Haidi's deeds are almost household names. Due to paraplegia, she lost all the sensory and motor functions of her limbs below the armpit and had to sit in a wheelchair. However, she said, "People are like a machine, and disabled people are like damaged parts. We can't ruin the whole machine because of this. Those parts that can be used are still very valuable. "So she practiced writing, singing and learning foreign languages, and soon improved her cultural knowledge, eventually becoming the only paraplegic graduate student in the world. She not only took a master's course, but also continued to pursue a doctoral course ... She was invited by countries all over the world to give a speech and won countless flowers and applause. She succeeded. Only fighters who are not afraid of difficulties and obstacles on the journey of life can enjoy the joy of success. Frustration; One of the great advantages of outstanding people is their perseverance in unfavorable and difficult encounters. -Beethoven insisted: people often mix truth and error to teach people, but insist on mistakes. -Goethe Success: Reading is like eating. Those who eat well grow up, while those who eat badly get sick. -Zhang Xuecheng