Basically, be nice even if others are trying to be mean or make you feel bad. Let them deal with their own negativity. I don't understand people deliberately trying to make others feel bad but trying to come across as nice people.
✪ "If there are no ups and downs in your life, it means you are dead." ✪ (I guess there is no "lesson" here, other than to expect the usual ups and downs which are a part of life.) Life And Style on Etsy