My late mother always taught me (starting from when I was a young child) to forgive and forget. I always did and I followed this wonderful life's lesson all my life. I never got stuck on a given situation or a person that did not treat me properly. I was always able to move forward. If a person was too disrespectful to me, I would have to end a relationship or friendship. Please, I urge you, as parents, to teach your child this practice by always following it. Right now with the New Year 2013 recently starting, it is a great time for a new beginning.
I wish All a very Happy and Healthy and Prosperous New Year!