Make yourself understand that what whips you isn't defeat, but your mental attitude toward it. Train yourself to look for the seed of equivalent benefit in every disappointment you face.

使你自己了解打倒你的不是挫折，而是你面对挫折时所抱的心态，训练自己在每一次不如意中，都能发现和挫折等值积极面。

youdao

To our great disappointment , it rained every day of the trip.

这次旅行天天下雨，让我们大失所望。

《牛津词典》

A scheme of which every part promises delight, can never be successful; and general disappointment is only warded off by the defence of some little peculiar vexation.

十全十美的计划总不会成功；只有稍许带着几分苦恼，才可以大体上防止得了失望。

youdao

So every disappointment is a blessing.

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The humility in the interview, his disappointment in not having been able to save every troop's life, is haunting.

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