鬼迷心窍

wǒ guǐ mí xīn qiào le bǎ huài rén dàng zuò hǎo rén

我鬼迷心窍了，把坏人当作好人。

I must have been brainwashed to have thought this bad guy was a decent person.

tā jiǎn zhí guǐ mí xīn qiào tīng bu jìn rèn hé dào lǐ

他简直鬼迷心窍，听不进任何道理。

He was in the grip of an obsession and would not listen to reason.

nǐ kěn dìng fēng le yào bù jiù shì zhòng le xié guǐ mí xīn qiào

你肯定疯了，要不就是中了邪，鬼迷心窍。

You must either be mad or utterly depraved and wicked.