Do you invest time or energy into relationships only to have everything you give thrown back in your face?
Part 1 of Dr. Abramson's series on the kabbalah of forgiveness describes the constant betrayal that G-d experiences when we use the life and energy that He invests into creation for negative purposes.
Comtemplating the degree of G-d's forgiveness allows you to forgive your own beneficiaries when they seem to wrong you.