For that you should have skill.
Truth does not mean rudeness. Often people who think they are just being truthful are very rude. Rudeness blocks communication and can disturb the harmony.
It also destroys the sense of listening. For anybody to hear you, you should have their ears first for listening. If you block the listening however correct you are it just doesn’t get absorbed. They don’t take it.
So to buy someone’s ear you should not be rude. And if you are rude you cannot buy someone’s ear. You can be firm but you cannot afford to be rude. And often we don’t know the line between firmness and rudeness. That is the problem.
