If it doesn't work, change it and just keep revising it, eventually something good comes out of it.

如果行不通就换一个主题，一直修改下去，直到写出好的作品。

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Most important, do your financial analysis and planning right at the outset and keep revising along the way.

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If not, keep revising, rehearsing, recording, and reviewing until you are happy.

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We medical types keep revising the definition of disease, to the point where if we look hard enough, we will find something wrong with almost everybody.

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