Proverb of the day :- If it isn’t broken, don’t fix it

Proverb of the day :- If it isn’t broken, don’t fix it

Meaning / example :-
If something is working well, don’t try to improve upon it. He has already made a name for himself in the society. His new campaign was absolutely un-required as the results tell us. I had told him, if it isn’t broken, don’t fix it.