I have read Man’s Search for Meaning by Viktor E. Frankl. It is about a Jewish psychiatrist who witnessed many horrific experiences during his years at Auschwitz and Dachau concentration camps. It thankfully does not go into too much detail about the treatment of the people at the camps, but explores why some people give up hope of surviving and why some people hold on to some hope of getting through the experience.
His premise is that we all determine our fate through our own thoughts and actions, we are not victims of fate, of things that are done to us: “Man does not simply exist, but he will decide what his existence will be in the next moment”. This has similarities to philosophies such as “the Law of Attraction” and to the idea that “what we give out we get back”.
I identify with this book as I am always trying to be in the moment, without looking back at what has happened nor projecting on to the future, it is an ongoing journey for all of us.