各人自扫门前雪，莫管他家瓦上霜
gè​rén​zì​sǎo​mén​qián​xuě, mò​guǎn​tā​jiā​wǎ​shàng​shuāng

mind your own business

各人自扫门前雪，莫管他家瓦上霜 (各人自掃門前雪，莫管他家瓦上霜) gè​rén​zì​sǎo​mén​qián​xuě, mò​guǎn​tā​jiā​wǎ​shàng​shuāng
mind your own business
Sweep the snow from your own doorstep and don't worry about the frost on your neighbor's roof; to mind one's own business and ignore the concerns of others.

Sources
Definitions
CC-CEDICT