抱怨太多等于不成熟
[bào yuàn tài duō dĕng yú bù chéng shú]
'抱怨太多等于不成熟' (Complaining Too Much Is Immaturity) points to a mindset of self-awareness, implying that constant complaints are seen as childish, and instead maturity comes with handling problems more positively and proactively.