On our journeys of self-mastery and balance through all of life's moment-to-moment and day-to-day changes, through every turn of the seasons, the I Ching describes the movements of the energies around us which can be useful in everyday life and practical in bringing our spiritual and mental/emotional development down-to-earth in our everyday lives.
The I-Ching addresses the handling of our internal and external aspects of light and dark. When particularly handling our Shadow-side, our limiting beliefs, and our internal struggles or anxieties, I am drawn to Hexagram/Passage #6, "Conflict", which describes the reflection of internal conflicts on our external experiences and perceptions. Also, Hexagram/Passage #18, "Decay", which describes the best route to handling limiting beliefs, bad habits, and other self-sabotaging tactics we use to hold ourselves in a complacent blanket of false security. These are just two out of 64 passages which address embracing goodness, learning self-mastery, and releasing the mental/emotional entrapment of our Shadow-side. It is not a practice in denial but the dynamic fullness of mindful acceptance.
My recommendations for a copy/translation/interpretation of The I-Ching, or The Book of Changes, are from the following authors: Brian Brown Walker (1993), Carol K. Anthony (1980), or Wilhelm & Wilhelm (1950). There are numerous translations, apps, and digital copies available, though I have so far appreciated these three the most. What you can conveniently find for yourself, The I-Ching is an invaluable piece of thoughtful, accessible, and practical guidance necessary to any spiritual library.