tā / yǐ / qián / jué / de / zì / jǐ / hěn / lì / hai / hòu / lái / cái / zhī / dào / zì / jǐ / shì / jǐng / dǐ / zhī / wā

他以前觉得自己很厉害，后来才知道自己是井底之蛙。

He used to think he was very capable, but later realized he was just a frog at the bottom of a well.