enough is as good as a feast 知足常乐；饱食有如赴宴；知所节制；适可而止

【例句】
What a big meal, what do you complain? you should understand enough is as good as a feast.
多丰盛的晚餐啊，你还抱怨什么。要懂得知足常乐。

Thank you, nothing more to drink for me. Enough is as good as a feast.
谢谢，我不想再多喝了。凡事适可而止。