World-renowned psychiatrist Viktor Frankl's Man's Search for Meaning is one of the most important books of modern times. Frankl's personal story of finding a reason to live in Nazi concentration camps has inspired millions. In Prisoners of Our Thoughts, Dr. Alex Pattakos—whom Frankl urged to write this book—elaborates seven "core principles" based on Frankl's philosophy and demonstrates how they can help us find meaning in our everyday lives and work . This second edition features new stories and examples of people who have applied the principles in the book or who exemplify them; new practical exercises and applications; and a new chapter, "The Meaning Difference®," which summarizes research demonstrating the critical role of meaning in improving the quality of people's lives, increasing happiness, promoting health and wellness, and achieving their highest potential.