self-control; self-restraint
彼は一瞬で自制心を失った。
He lost his self-control in an instant.
交渉の場で見せる彼女の自制心は社内で評判が高い。
Her self-control in negotiations has earned her a strong reputation in the firm.
厳しい訓練はアスリートの自制心を養う上で欠かせない。
Strict training is indispensable for cultivating an athlete's self-control.