This book, "The essence of self-inquiry," may well help you to open your inner living book of ego which is not yet opened in you and its pages are uncut. Please don't die as an unopened book for it is sad that millions die as unopened books. Watch your own actions, relationships and moods more closely. Watch how you are when you are alone, how you are when you are with people, how you behave.
self-inquiry is not an effort against the mind but rather a loving way of witnessing the mind which is the result of evolution and contains the whole experience of existence. Your mind is not personal, it represents the whole evolutionary process. So self-inquiry is an impersonal way of exploring the mind without any reference center. Inquiring mind penetrates into itself, aware of one's own psychological being with its urges, compulsions, frustrations, desire to fulfill, miseries, strains, anxieties, struggles, sorrows and other innumerable problems. In self-inquiry there must be constant and earnest awareness.
Hierarchy by Agni Yoga Society
MAHAVAKYAS of the Upanishads by Ajai Kumar Chhawchharia
Vishnu Sahasra Nama Stotram by Suresh
The Feet of the Guru by B Ramakrishna