Cut your coat according to your cloth.
量身裁衣.量力而為、量入為出.三思而后行.
Don't count your chickens before they are hatched.
勿打如意算盤.
Don't cut off your nose to spite your face.
不要跟自己過意不去.賭氣無用.
Don't quarrel with your bread and butter.
勿自砸飯碗.別跟自己的工作過不去.
Don't wash your dirty linen in public.
家丑不可外揚(yáng).
To each his own.
人各有命.
You can't have your cake and eat it too.
又想吃掉餅,又想餅在你手邊. 天下哪有這麼好的事!