We use this expression to ask someone to respect one’s privacy.
You can use this phrase in ………… language.
Spoken
Informal
Example 1
A: Where have you been? You went out without a word.
B: Mind your own business! You don’t have to know my every move.
Example 2
A:Hey! How much must one earn to be able to afford such car?
B: I don’t see how this is any of your concern – mind your own business!