to keep feelings inside and not express them
感情を内に秘めて表現しない (kanjo wo uchi ni himete hyogen shinai)
"He tends to bottle up his emotions, which isn't healthy in the long run."
"彼は自分の感情を抑え込む傾向があり、長期的には健康的ではありません。" (kare wa jibun no kanjo wo osaekomu keiko ga ari, choki teki ni wa kenkoteki dewa arimasen)
to submit something to someone in authority
to stay focused on a task or goal
don’t assume something will happen before it actually does
To do something in a different way from what is usually done
to hide or ignore problems instead of solving them
to beat or trick a system that uses AI or automation