Everyone tries to achieve success in his career. However, someone firmly attains his goal while another fails. Why? The one continues his cause to the end through long periods of hard struggling, but the other is easily disappointed or stops halfway. Good preparation, perseverance and diligence are the three essentials of success. A man of solid preparation and perseverance always has an inflexible spirit. He sticks to his cause no matter how tough it might be. Dr. Sun Yat-sen was such a man. Many of his attempts failed, but he held to his purpose with firmness and finally succeeded in overthrowing the Qing Dynasty. Diligence means steadiness in one¡¯s work and study. Su Qin stabbed himself in order to keep himself attentive to studies. Marx often worked 15 hours a day. Life is short and we have many things to do. Without diligence no one can achieve anything. I believe that where there is a preparation there is a way, and that success belongs to those who can suffer long years of patient toil and constant efforts.