断言某事做不成的人，不要去打扰做此事的人。
The person who says it cannot be done, should not interrupt the person doing it. [Chinese saying].
积极的心态，是去询问怎样把某事做成，而不是说此事做不成。
Having a positive mental attitude is asking how something can be done rather than saying it can't be done.
拥有一个积极的心态，是去询问怎样才能把某事做成，而不是说此事做不成。
Having a positive mental attitude is asking how something can be done rather than saying it can't be done.
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