A man hath joy by the answer of his mouth: and a word spoken in due season, how good it is!
See Proverbs 15:23
"The real art of conversation is not only to say the right thing at the right place, but to leave unsaid the wrong thing at the tempting moment."
Lady Dorothy Nevill
Though it may be difficult at times, being consistently pleasant is a way to get people to soften when they are not. When you are kind, sincere, helpful, and pleasant despite their choices and behavior, it creates an environment for them to choose to behave differently. BE BLESSED!