You can show people the way to do things, but you can't force them to act.
Browse entries near You can lead a horse to water, but you can't make him drink.
you bet your ass
you bet!
you better believe it
You can catch more flies with honey than with vinegar
you can lead a horse to water but you can't make it drink
you can say that again
You can't fit a round peg in a square hole
You can't go home again
You can't have your cake and eat it too
You can't make a silk purse from a sow's ear