Fetching details from the dictionary...
pride; self-confidence; thinking highly of oneself; being proud of one's abilities or achievements
彼は自分の能力に強い自負を持っている。
He has a strong sense of pride in his abilities.
専門家としての自負が仕事の質を高めている。
His pride as a specialist is raising the quality of his work.
自負心が強すぎると他者の意見を聞けなくなる。
If one's self-confidence is too strong, one becomes unable to listen to others.