one person can be both the cause of one's success and one's failure
Meanings
1 sense · 4 examplesidiom
success and failure are both due to the same person
literary源自汉初典故，萧何起初推荐韩信为大将军助其成功，后又设计使其失败被杀。现常比喻某人对某事具有决定性的双重影响。
He got promoted because the manager promoted him; now he is fired due to the manager's decision, truly a case of success and failure both due to the same person.
The life and death of this project are entirely in his hands, very much reflecting the idea that one person can be both its maker and breaker.
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The star product that the company relies on was both developed by and led to a market crisis due to this chief scientist, truly a case of the same person causing both its rise and fall.
For the team, the coach's tactics once won them the championship, but also got them relegated; it can be said the same person was responsible for both victory and defeat.