Nature and grace are viewed as flowing together from God. They are both sacred gifts. The gift of nature ... is the gift of "being"; the gift of grace, on the other hand, is the gift of "well-being." Grace is given to reconnect us to our true nature.
Forgiveness is a complex experience that changes an offended person's spiritual feelings, emotions, thoughts, actions, and self-confidence level. I believe learning to forgive the hurts and grudges of our life may be an important step for us to feel more hopeful and spiritually connected and less depressed.