stay in one's lane

Etymology
Metaphoric, from the conventions for driving a motor vehicle.

Verb

 * 1)  To keep to one's own kind; to avoid intermixing or associating with other types of people.
 * 2)  To mind one's own business.
 * 1)  To mind one's own business.
 * 1)  To mind one's own business.

Translations

 * Italian: stare al proprio posto