Books like The Doctor and the Soul: From Psychotherapy to Logotherapy

I've never had a keen interest in psychology... until I read Viktor Frankl. This book is a more in-depth discussion of logotherapy than the introductory one given in Man's Search for Meaning. Frankl's insights complement and correct other approaches to psychotherapy (psychoanalysis and behaviorism) that tend to objectify human beings and reduce their behavior and thinking to external "causes" or internal psychological "drives" rather than "reasons". He gives the human soul it's rightfully prominent place in psychology.