ધણીને સુઝે ટાંકણીમાં, પડોશીને અરીસામાં પણ ન સુઝે.

dhaṇīnē sujhē ṭāṁkaṇīmāṁ, paḍōśīnē arīsāmāṁ paṇa na sujhē.

Literally: The owner sees it in a needle, the neighbor does not see it even in a mirror.
What it means: People are often blind to their own obvious faults while noticing those of others.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) · read from the scan by machine — the Gujarati itself is unchecked · English is machine-made and nobody has checked it yet

Heard it differently, or know we've got the sense wrong? Tell us — that is exactly the kind of correction this needs.