mind one's own business

Idioms  

1. Keep from meddling, pay attention to one's own affairs, as in If she would only mind her own business, there would be a lot fewer family quarrels. Already described as a wise course by the ancients (Seneca had it as Semper meum negotium ago, “I always mind my own business”), this precept has been repeated in English since about 1600.

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Example Sentences

“The best advice in this situation would be just to take care of oneself and mind one’s own business,” he said.

From Seattle Times

It suggests that people are different, that one should mind one’s own business and let other people mind theirs.

From The New Yorker

One of the show’s central tensions is Jones’ competing desires to confront and flee her tormentor, a tension that boils down to the obligation to help others versus the right to mind one’s own business.

From Slate

It looks very easy to mind one's own business, but it is one of the hardest things in the world to do, because it is one of the hardest things in the world for us to be willing to do.

From Project Gutenberg

"And I think one does better to mind one's own business."

From Project Gutenberg