If your brother or sister sins, go and point out their fault, just between the two of you. If they listen to you, you have won them over.
If you have a misunderstanding or a fight with someone, maybe your friend, relative or someone whom you know, never go and blame about them to others. Solve the problem between yourselves without calling another person to fix things for you. The better way to correct someone is to speak frankly with them, instead of complaining and help them realize their mistake. If you do so, you will surely win their heart.
Philippians 1:29 “For it has been granted to you on behalf of Christ not only to believe in him, but also to suffer for him.”