心非薄荷不必清凉心非柠檬何必心酸
[xīn fēi bó hé bù bì qīng liáng xīn fēi níng méng hé bì xīn suān]
If I'm not a mint I need not be cool; if I'm not a lemon I don’t have to feel bitter. An expression of letting go, suggesting no need to force feelings or experiences beyond necessity.