get a grip (on yourself)
US /ɡɛt ə ɡrɪp (ɒn jʊərˈsɛlf)/
UK /ɡɛt ə ɡrɪp (ɒn jʊərˈsɛlf)/

1.
controlar-se, se recompor
to make an effort to control your emotions and behave more calmly
:
•
Come on, get a grip on yourself! There's no need to cry.
Vamos, controle-se! Não há necessidade de chorar.
•
She needs to get a grip and stop panicking about the exam.
Ela precisa se controlar e parar de entrar em pânico por causa do exame.