Generate a full detail guide on the practice of forgiveness for mental well-being. The guide should be written in a gentle and non-judgmental tone. It must include sections on: 1. What Forgiveness Is (and what it is not—it's not condoning behavior). 2. The mental health benefits of letting go of resentment. 3. A step-by-step process for working towards forgiving someone. 4. A special section on the importance and process of self-forgiveness. Please include a disclaimer that this is a personal process and may require therapeutic support.