Man’s Search for Meaning is one of the all-time great books on life meaning and purpose by Viktor Frankl. First published in 1946, Frankl chronicles his experiences as a prisoner in Nazi concentration camps during World War II.
When faced with unimaginable suffering, there are four differing approaches one could take; 1) to give up and resign oneself to fate 2) turn to religion 3) spiritualize the circumstances 4) find practical purpose and meaning in life, then immersively imagine a positive outcome.