Why do people say that their hearts are broken when they get sad? I think a more appropriate organ to take the damage would be the liver. We can still survive even if we lose 80% of our liver. Sometimes when people say mean things to me, I feel like part of me is dying. Maybe it’s a part of my liver. It grows back. No need to build a wall.

A gentle answer turns away wrath, but a harsh word stirs up anger. (Proverbs 15:1)

A wholesome tongue is a tree of life. (Proverbs 15:4)

Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen. And do not grieve the Holy Spirit of God, with whom you were sealed for the day of redemption. Get rid of all bitterness, rage and anger, brawling and slander, along with every form of malice. Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you. (Ephesians 4:29-32)

I think God is saying that we shouldn’t say nasty things to people. And when people say nasty or unfair things to us, we should not respond. I believe that when people are truly trying to live in a way that honors Christ, they will not want to hurt each other—quite the opposite, they will want to encourage each other. Especially when both parties are trying really hard to become better people in general. 

Therefore if you have any encouragement from being united with Christ, if any comfort from his love, if any common sharing in the Spirit, if any tenderness and compassion, then make my joy complete by being like-minded, having the same love, being one in spirit and of one mind. Do nothing out of selfish ambition or vain conceit. Rather, in humility value others above yourselves, not looking to your own interests but each of you to the interests of the others. (Philippians 2:1-11)