How to maintain peace with neighbor?

Proverbs 11:12
New King James Version (NKJV)

12 He who is devoid of wisdom despises his neighbor,
But a man of understanding holds his peace.

Proverbs 14:20-21
New King James Version (NKJV)

20 The poor man is hated even by his own neighbor,But the rich has many friends.

21 He who despises his neighbor sins;But he who has mercy on the poor, happy is he.

Proverbs 24:28-29
New King James Version (NKJV)

28 Do not be a witness against your neighbor without cause,
For would you deceive with your lips?
29 Do not say, “I will do to him just as he has done to me;
I will render to the man according to his work.”

Proverbs 25:8-10
New King James Version (NKJV)

8 Do not go hastily to court;
For what will you do in the end,
When your neighbor has put you to shame?
9 Debate your case with your neighbor,
And do not disclose the secret to another;
10 Lest he who hears it expose your shame,
And your reputation be ruined.

Proverbs 25:17-18
New King James Version (NKJV)

17 Seldom set foot in your neighbor’s house,
Lest he become weary of you and hate you.
18 A man who bears false witness against his neighbor
Is like a club, a sword, and a sharp arrow.

Proverbs 26:18-19
New King James Version (NKJV)

18 Like a madman who throws firebrands, arrows, and death,
19 Is the man who deceives his neighbor,
And says, “I was only joking!”