A while back I asked the question "What is the nicest thing anyone has ever done for you?"
Today, I pose the question "What is the meanest/worst/rudest thing anyone has ever done to you?
For me, I suppose it was those times I was cheated by someone I trusted.
How did you deal with it? Were you able to completely put the incident in your past? Were you truly able to forgive? Did you learn from the incident and use that knowledge to help you in your future dealings with people?