Cultivating our wisdom is one of our most important tasks. If we don't spend enough time alone listening to the counsel of our hearts, then we will never become wise. If we don't spend enough time in the presence of others who try to walk a path of heart, we will never become wise. If we do not cultivate, through prayer or meditation or spiritual practice, a stronger heart that can fly and endure, then we'll never become wise.
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.