Treat others the same way you want them to treat you.
I’m not sure what I could say here that could possibly make this verse hit home any more than it already does (or should). If you consider your actions and always put yourself in others’ shoes, it will help you make better decisions. This can also help you decide to do nice things for others as well. It’s not just about not being mean or rude to folks. What if you were hungry and homeless on the side of the road holding a cardboard sign?
Everything you do to others, try to think about how it would make you feel if someone did that to you, whether good or bad. Ask God to help you see people through His eyes today.