In Mitch Albom's "Have a Little Faith," a poignant message is conveyed about the futility of anger and holding onto grudges. The idea presented is that such negative emotions can lead to internal turmoil, ultimately harming oneself more than anyone else. This insight highlights that harboring resentment does not resolve issues but rather creates further emotional distress.

Anger, as described in the narrative, becomes a self-destructive force that can corrode one's peace of mind. By choosing to let go of anger, individuals can free themselves from this internal struggle and foster a healthier emotional state. This lesson emphasizes the importance of forgiveness and emotional clarity in achieving personal well-being.