If it ain't broke don't fix it American informal slang
I am not planning to change my furniture because I think if it ain't broke, don't fix it.
Your ideas to update the computer system are not appreciated because if it ain't broke, don't fix it.
1. Good or fantastic
2. (of a person) Attractive, or sexy
3. A sexually attractive person
(Image Source: Internet)
This American slang is said to have originated in the 18th century, but the literary origin comes from 1977 in a "Nations Business" newsletter quoted by Thomas Bertram.
Friendships will develop well and be successful when the friends respect each other's privacy.
You should respect your friend's privacy. A hedge between keeps friendship green.