Keep this in mind...
Why would anyone feel the need to denigrate others? People do not do things for no reason whatsoever. Ask yourself, "What are they trying to accomplish by telling me this?"
If you are one of those troubled people who likes to build yourself up by putting others down, remember that karma is a bitch. I love karma...it takes the onus off of me...I simply wait for life to take it's inevitable turns.
Life is what you make it. If you look at a situation as a miserable one, it obviously is a miserable situation. That is your reality. If you see it as a challenge, an honest mistake or a situation that you can better, then that is exactly what it is.
Find a way to be happy even if that means making another person happy. Imagine what others will say about you if you take life as it comes with class, aplomb and decency. It is ever so much more wonderful than anger, bitterness and holding grudges.
Let he who is without sin cast the first stone.