a grip on oneself

a grip on (oneself)

Control of one's reactions or emotions. After losing her job, Sarah needed to calm down and get a grip on herself in order to drive home safely. You're not going to be able to think clearly until you get a grip on yourself.
See also: grip, on
Farlex Dictionary of Idioms.

*a grip on oneself

Fig. control of one's emotions. (*Typically: get ~ have ~.) Calm down, man! Get a grip on yourself! I encouraged him to get a grip on himself.
See also: grip, on
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • a grip on
  • a grip on (oneself)
  • break down and cry
  • shut down emotionally
  • collect (oneself)
  • collect yourself/your thoughts
  • composure
  • boiling point
  • be written all over (one's) face
  • be written all over your face