Meaning of the word "physician, heal thyself" in English

What does "physician, heal thyself" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

physician, heal thyself

US /fɪˈzɪʃ.ən hiːl ðatˈsɛlf/
UK /fɪˈzɪʃ.ən hiːl ðatˈsɛlf/
"physician, heal thyself" picture

Idiom

used to tell someone to attend to their own faults or problems before criticizing others

Example:
He is always giving financial advice despite being in debt; physician, heal thyself!
Before you criticize my messy room, remember: physician, heal thyself.