I learned the value of forgiveness, many years ago. That doesn't mean I'm accomplished in it.
New trials pop up every day, tempting one to harbor contempt and some of them are really hard to overcome. Nobody on this earth, is perfect. Not by a long shot.
We run up against people who seem to think themselves perfect, looking down their noses at anyone they view as 'under' them. I'd have to say that when this attitude is directed at you, it becomes the hardest temptation to overcome.
Don't do as I do, do as I say? :) I guarantee, if there's anyone who understands, it's me.
Remember who you are and remember who is important. Your Lord's opinion of you counts a whole lot more than that of your neighbor. Hang in there and remember your reward has nothing to do with this world.