Directions: Write an English composition in 120—150 words according to the instructions given below in Chinese.

“Life is not easy for any of us. We must work, and above all we must believe in ourselves. We must believe that each one of us is able to do something well, and that,   when we discover what this something is, we must work until we succeed.”

—Madame Curie

读了居里夫人的这段话，你有何感想？请结合生活中的具体事例对你的观点加以说明。
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