practice what you preach
idiomPart ofpractice
practice what you preach — idiom
1. to do the things yourself that you tell other people they should do.
1.idiom
Definition
to do the things yourself that you tell other people they should do.
Example
The mayor talks a lot about saving water, but he should practice what he preaches.
If parents want their children to read, they need to practice what they preach.