Meaning of the word "do as I say and not as I do" in English

What does "do as I say and not as I do" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

do as I say and not as I do

US /duː æz aɪ seɪ ænd nɑːt æz aɪ duː/
UK /duː æz aɪ seɪ ænd nɒt æz aɪ duː/
"do as I say and not as I do" picture

Idiom

used to suggest that one should follow someone's advice rather than follow their example

Example:
My father always told me, 'Do as I say and not as I do,' while he was smoking a cigarette.
The politician's behavior was a classic case of 'do as I say and not as I do.'