因小失大

rú guǒ nǐ yīn cǐ ér huī xīn sàng qì nà jiù huì yīn xiǎo shī dà

如果你因此而灰心丧气，那就会因小失大。

If you let yourself be depressed, then you will pay too big a price for mere trifles.

wǒ men bù kě yīn xiǎo shī dà

我们不可因小失大。

We can't risk big things for the sake of small ones.

tā zài bǐ sài zhōng méi yǒu kòng zhì hǎo qíng xù dǎo zhì shī bài shí zài shì yīn xiǎo shī dà

他在比赛中没有控制好情绪，导致失败，实在是因小失大。

He failed bacause he was too emotional; he paid too big a price for mere trifles.