A mental attitude or readiness for an event; the mindset or preparation one has before facing something.
面接に行く前に心構えを整えておこう。
Let's get mentally prepared before going to the interview.
山登りでは十分な心構えと準備が必要だ。
Mountain climbing requires proper mental readiness and preparation.
教師は生徒に失敗を恐れない心構えを教えるべきだ。
Teachers should teach students an attitude that doesn't fear failure.