to accept a mistake as a lesson for the future
過ちを将来の教訓として受け入れること (ayamachi o shorai no kyokun to shite ukeireru koto)
"I lost my wallet again — well, live and learn."
"また財布をなくした—まあ、経験から学ぶものだ。" (mata saifu o nakushita maa keiken kara manabu mono da)
To treat someone very gently or carefully.
to start something quickly and energetically
to keep trying until you succeed
to be overlooked or neglected
to achieve more than before, to improve
Things are usually worst just before they improve.