get/take a grip on yourself
From Longman Dictionary of Contemporary Englishget/take a grip on yourselfget/take a grip on yourselfCONTROLto start to improve your behaviour or control your emotions when you have been very upset Stop being hysterical and get a grip on yourself. → gripExamples from the Corpusget/take a grip on yourself• I got a grip on myself and made it back to my office.• He must take a grip on himself.• I must get a grip on myself, she told herself firmly.• I had to get a grip on myself and put this whole wretched business behind me.• Damn you, get a grip on yourself.