cut off one's nose to spite one's face
📖 generalMeaning
To harm oneself in an attempt to harm someone else, or to react in an overly emotional or self-defeating way.
Literal Meaning
To physically sever one's own nose in an act of revenge or spite.
Example
“Refusing to attend the company picnic just because you don't like the new manager would be cutting off your nose to spite your face.”