曾非你不可今唯我独尊
[céng fēi nĭ bù kĕ jīn wéi wŏ dú zūn]
It translates to: 'once I couldn't live without you, now I am the only one who matters'. This reflects a significant shift in one's mindset. Initially dependent on another person, but after experiencing something like a breakup or personal growth, the individual becomes self-sufficient and feels strong independently.