To regain control of your emotions after being upset.
After the argument, she needed to collect herself before speaking.
논쟁 후에, 그녀는 말하기 전에 자신을 수습해야 했습니다.
To focus your mind before doing something important.
He took a deep breath to collect himself before the big presentation.
그는 큰 프레젠테이션 전에 깊은 숨을 들이마셔 자신을 집중시켰다.