Jīntiān fāshēng de shì ràng wǒ xīnsāi le yì zhěng tiān.
What happened today left me feeling crushed all day.
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Very colloquial, common online since around 2014. Stronger than 难过 (sad) — implies being stuck and unable to do anything about it. Compare 郁闷 (depressed/stuffy) and 憋屈 (feeling wronged and bottled up).