stew in own juice

stew in (one's) (own) juice(s)

To brood over one's unpleasant emotions, such as guilt, anger, or anxiety, in isolation. Kevin was in such a foul mood at dinner that I left early and just let him stew in his own juice. I can tell the suspect is racked with guilt. Let her stew in her juices for a while, and she'll confess.
See also: stew
Farlex Dictionary of Idioms.

stew in one's own juice

Fig. to be left alone to suffer one's anger or disappointment. John has such a terrible temper. When he got mad at us, we just let him go away and stew in his own juice. After John stewed in his own juice for a while, he decided to come back and apologize to us.
See also: juice, own, stew
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • stew in (one's) (own) juice(s)
  • stew in one's own juice
  • stew in your own juice
  • let (one) stew in (one's) own juice(s)
  • let someone stew in their own juice
  • leave (one) to stew in (one's) own juice(s)
  • come to a bad end
  • come to a bad/sticky end
  • fall out with (someone) about (something)
  • fall out with (someone) over (something)