in life you will realize there is a role for everyone you meet some will test you , so will use you some will love you, some will teach you but the ones who are truly important are the ones who bring out the best in you.
"I plead with you to control your tempers, to put a smile upon your faces, which will erase anger; speak out with words of love and peace, appreciation, and respect. If you will do this, your lives will be without regret. Your marriages and family relationships will be preserved. You will be much happier. You will do greater good. You will feel a sense of peace that will be wonderful" ("Slow to Anger," October 2007 General Conference). Gordon B. Hinckley
It's hard at times to be the mature one when they're calling you things out of anger and it's hard not say something back. But I've done this many many times trying to understand why they're upset..but the thing was, they didn't understand me and went ahead and made assumptions instead :/