If we over promise and miss our target, others will say we failed.

如果我们失信并且错过目标，其他人就会认为我们失败了。

youdao

Pisces children also need to learn not to over promise themselves.

双鱼座的孩子还要注意不可过多地许诺。

youdao

So it's just half of the equation and what these self-help books and messages do is over promise and under deliver, which at times can be destructive.

所以这些心理自助书籍和信息只是等式的一半，而且往往言过其实，达不到预期效果，甚至有时会造成毁灭性的后果。

youdao

Well what can you do? Well you can promise miracles, there's very little control over these sorts of things, you can distort the science, you can lie about what you do and nobody will come after you.

那么你会做什么呢,你可以承诺奇迹,这很难给予控制,你可以歪曲科学,你可以说谎,隐瞒你的作为,也没有人会找你麻烦

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Leaders who over promise and under deliver will watch a steady stream of their unhappy customers head for the door, while also telling their friends to shop elsewhere.

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The other equally important advice I would give is not to over-promise and under-deliver.

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Though this ought not to count against him in his bid to be mayor, his willingness to over-promise should.

ECONOMIST: Brazil