This book presents the profound spiritual principles of A Course in Miracles with great simplicity. In the classic story Les Misérables, the main character is forgiven and so turns his life around by seeing everything through the eyes of forgiveness. Your life can also be transformed by practicing forgiveness and six other life-changing lessons from A Course in Miracles. To understand the Course, you must have the humility to stand under its wisdom by letting go of the lessons you have taught yourself. To learn this course requires willingness to question every value that you hold. To simplify your learning process, this book focuses on the seven pillars of thought that serve as a foundation for applying the Course to your daily life. The seven essential tools of the Holy Spirit are: forgiveness, Christ's vision, the holy instant, the holy relationship, the quiet time of meditation, miracles, and the Atonement. This book clarifies the significance of these seven tools of the Holy Spirit and also identifies the interrelationships between them, showing how they work together to unify the mind and bring about spiritual transformation. These are the keys to Heaven because the Holy Spirit uses them to enable you to awaken in your true Home in Heaven. This is the third book in a three-part series. The first book, An Overview of 'A Course in Miracles,' introduces the Course. The second book, The Two-Month Bridge to 'A Course in Miracles,' is a condensed version of the Course, including study questions and answers. The same questions raised in the second book are presented again in this third book, but this time are answered in a much more complete way to review and to build on what you have previously learned. Ideally all three books will be read in this consecutive sequence. However, these are companion books that can be read in any sequence, and each book also stands on its own as a preparation for a more in-depth study and application of the Course.