When facing a difficult challenge it's easy to quit. Don't quit until you achieve your goal.

当面对艰难挑战时很容易退却。不达到目标不要退却。

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Quit. If you find yourself so afraid, so burned-out, so cynical that you can't believe a big idea is about to happen, it is time to move on to the next challenge.

如果你发现自己已经是畏手畏脚、焦头烂额，甚至自惭形秽地认为那个“伟大的想法”是不可能实现的时候，就该放弃它转而尝试新的挑战了。

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Kan, who faces a strong challenge from party rivals who want him to quit immediately, has said he will step down as soon as the country is on the recovery track.

菅直人，面对着来自其对手党派的强有力挑战，竞争党派要求其立刻下台。简直人指出他将在国家走上复苏之后辞职。

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But officials admit it will be a particular challenge to force Egyptians to quit.

BBC: Egypt introduces Alexandria smoking ban

Incumbent Charlie Luken (D), who quit his job as WLWT anchor to run successfully for mayor, is facing a spirited challenge from Courtis Fuller -- also a Democrat, and a former anchor from the same station.

CNN: New York, other major U.S. cities look for new stewards