难不难过都是自己过伤不伤心都是一个心
[nán bù nán guò dōu shì zì jĭ guò shāng bù shāng xīn dōu shì yī gè xīn]
No matter whether it's painful or not, it's something to get through by oneself. No matter whether it's heart-breaking or not, it happens in one’s heart. It represents a very independent state of mind facing challenges, showing resilience.