自分の首を絞める（じぶんのくびをしめる）

Japanese vocabulary

Meaning: to cut one's own throat; to dig one's own grave; to cause oneself harm; to bring ruin on oneself

See it used in real works

• Example sentences from Japanese novels & web fiction (Massif)
• Hear “自分の首を絞める” pronounced in real videos (YouGlish)