Self-confidence; trust in one's own abilities or judgment.
面接では落ち着いて自信を持って話すことが大切だ。
In an interview, it's important to stay calm and speak with confidence.
長年の経験が彼に自信を与えた。
Years of experience gave him confidence.
自信をつけるために小さな成功体験を積もう。
Build small successes to gain confidence.