leave well enough alone
US /liːv wɛl ɪˈnʌf əˈloʊn/
UK /liːv wɛl ɪˈnʌf əˈloʊn/

1.
biarkan sahaja, jangan ganggu
to allow a situation to remain as it is, because trying to improve it might make things worse
:
•
The old system works fine, so let's leave well enough alone.
Sistem lama berfungsi dengan baik, jadi mari kita biarkan sahaja.
•
I wanted to offer advice, but decided to leave well enough alone.
Saya ingin memberi nasihat, tetapi memutuskan untuk membiarkan sahaja.