"Who looks outside, dreams; who looks inside, awakes."
— Carl Jung
"Accept the truth from whatever source it comes."
— Maimonides
David Zulberg is the author of CRI: Compassionate Rational Inquiry — a method for interrupting the loop where pain becomes suffering. He is also the bestselling author of The Life-Transforming Diet and The 5 Skinny Habits, and is widely considered one of the foremost authorities on the medical and philosophical works of Maimonides.
Born in South Africa and based in New York, he holds a Master's from Columbia University and spent six years in full-time study of ancient philosophical and medical texts. He has taught thousands of people across more than a decade of workshops and one-to-one coaching.
THE QUESTION
This book was written because suffering has a structure. Not because pain can be avoided — it can't. Because the additional layer most of us add — the self-attack, the impossible demands, the identity verdicts, the resentment that outlasts the event — that part has a structure. It can be seen. And once it can be seen, it can be interrupted.
THE STUDY
For six years, I gave myself almost entirely to the study of ancient philosophical and medical texts. The questions that pulled me weren't academic. They were the questions everyone asks, eventually: why do we suffer the way we do? What can be changed, and what can't?
THE PATTERN
The first books applied what I had built to the body. They found readers in the tens of thousands. But across hundreds of coaching conversations, the same pattern kept surfacing — a loop of thought and emotion no diet or fitness program could touch.
THE TURN
The shift came the moment I turned the question inward. What am I telling myself this means? What am I demanding from what cannot be commanded? What conclusion about myself am I quietly defending?
THE METHOD
CRI is the method that came from those questions. Not a set of positive affirmations. A structured inquiry — eight questions that, asked honestly and in sequence, reliably loosen the grip of the loop that turns pain into prolonged suffering.
The book is the practice as I would teach it. The coaching is the same practice taken slowly, person to person, where it actually lives.