Jawapan Paling Bijak!
Hi, it's actually "practice what you PREACH"

practice = apa yang kamu lakukan
preach = apa yang kamu cakap

maksudnya = cakap serupa bikin.

if you are the type of person who talks about the importance of time, you should always be on time when you agree to meet someone. If you are late, then that means you are not practicing what you preach.
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Cliché You yourself should do the things you advise other people to do. 

example sentence
* Dad always told us we should only watch an hour of television every day, but we all knew he didn't practice what he preached.