There was one scripture in particular that caught my eye. It says to do good to those who are not doing good to you. (Proverbs 25:21-22) In this way, you heap burning coals on their head (they feel guilty and ashamed), AND it says that when you do good to them it pleases God. Win - Win situation I think.
Ya, I hear ya. That is easier said then done.
Doing good doesn't mean pretend to be their new best friend and be fake. I believe that it means.....if they are at the coke machine and you see that they need 5 cents more, walk up and give it to them.
You think it wont work? Well, you wont ever know unless you try, right?