Chapter 3 outlines the stages of development of the embryo and the clinical implications. Key developmental milestones of the foetus during pregnancy are discussed. As well as the clinical implications concerning the processing of the gut, heart, and head-brains an update is provided on the “Predo” project investigating the impact of maternal stress hormones on the infant’s brain. The relationship to our six core emotions is explained along with the impact of psychotherapy on emotional regulation. The peak performance approach of Dr Peters in his book The Chimp Paradox is briefly outlined. Similarities to the top-down and bottom-up processing are found in the symbolism of The Wizard of Oz and the mythology of the ancient Egyptian Pharaohs and the Chinese language. Embryonic development and the role of the cingulate cortex and corpus callosum in processing emotions, integration, orientation, and memory formation are explained. I pose the question of whether humans have a sixth sense about the latest research on magnetoreception. This may have a bearing on how quantum field theory interacts with psychotherapy as discussed in Chapters 7 and 8.