expression, ichidan verb
pull oneself together; focus one's mind; brace oneself
Used when someone consciously tightens their mental focus or resolve, often before a challenge or after a setback. Similar to 気を引き締める, but with 気持ち emphasizing one's feelings or spirit.
See also: 気を引き締める (きをひきしめる)
Before the exam, I pulled myself together and focused on studying.
失敗しても気持ちを引き締めて、もう一度挑戦しよう。
Even if you fail, brace yourself and try again.