I hope the books are helpful. If I were to recommend onebook, it would be "Man's Search for Meaning" by Viktor E. FRANKL. It' a classic in psychology. Frankl was a survivor of the Nazi death camps and developed the first humanist perspective of psychology. Its priciple are that we cannot avoid suffering but we can choose how we cope with it, find meaning in it, and move forward. The book has been an inspiration to me and I highly recommend it to anyone who is looking to find more meaning in their lives.