Can sound rude or annoyed when said directly, so use cautiously.

Politeness

Soften it by adding phrases like 'if you don't mind' to sound less harsh.

Non-confrontational

In some cultures, this phrase can be very offensive. Understand the social context first.

Use it to express focusing on one’s own life rather than others’ affairs.

It's about taking responsibility for one's own life and problems.

Sometimes used to politely decline involvement in conversations or debates.