One possible version:

No gains can be achieved in the absence of pains, as is dramatically illustrated in the material above. Every effort we make will pay off some day, allowing us to reap the harvest expected.

It is especially true in our study. Once I failed in the mid-term exam, for the reason that I had been addicted to computer games and had never spared any time to make necessary preparations. After that, I adopted the resolution that I would tear myself away from games and concentrate on what I was supposed to do. I succeeded in the final exam, ranking 3 in the class. Why I could return to the top list best explains the undying truth of no pains, no gains.

题目分析：本文从分析No pains, no gains.这句话入手发表感想。要求紧扣材料，结合实际，有明确的观点。还要注意字数的要求：不少于60词。议论文一般采用一般现在时，以自己身边实际的事为例，往往用过去时。注意人称的一致性。再注意句子的衔接，以提高作文的档次。

【亮点说明】文中使用了非常好的短语和句子为文章增色不少，比如pay off，throw away，be addicted to, concentrate on，还运用了非谓语形式做状语;主语从句等等。并注意了句子的衔接如：Once，After that等。