What does the Bible say about minding your own business?

There’s 1Th 4.11, of course. Then there are Jesus’ words to Peter when the latter asks about John. And we have warnings against meddling in the affairs of others, Pro 26.17, 1Tm 5.13.

What other verses can you think of that tell Christians to mind their own business? And how do you see this fitting in with the command to proclaim the gospel?