cut your own throat
cut (one's) own throat
To cause problems for oneself with one's own actions (which are often motivated by anger). I know you're mad at your dad, but don't cut your own throat here—running away is only going to make your life harder.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
cut your own throat
bring about your own downfall by your actions.Farlex Partner Idioms Dictionary © Farlex 2017
cut your own ˈthroat
do something that is likely to harm you, especially when you are angry and trying to harm somebody else: You cut your own throat when you told him to leave. How are you going to manage alone?Farlex Partner Idioms Dictionary © Farlex 2017