Despite remarkable insight regarding our understanding of metabolism and physiology, astounding advances in fitness technology and the availability of countless so-called revolutionary diets and fitness programs, each promising immediate and sustained success, relatively few individuals seem to achieve and maintain their intended goals. In fact, data continues to suggest the prevalence of obesity, the world's "other pandemic," and recently overshadowed but quietly accelerated by the COVID-19 crisis, continues to rise. The future combined impact on the overall health and prosperity of society as we enter the dawn of the "new normal" raises many valid questions and concerns. The stakes may have never been higher to start finding some answers. As opposed to targeting a small subset of young, highly motivated, advanced fitness enthusiasts, as many current popular programs seem to do, It's All in Your Head was written with the rest of us in mind. Rather than another "how to" manual, it is a "why to" inspirational guide and navigational tool in what has become the complex space of fitness and nutrition. Join me on a retrospective, psychological journey back to the origins of the unhealthy behavior patterns defining who we have become and explaining why we struggle to achieve our health and fitness goals. Incorporating a basic understanding of the fundamental principles universal to every successful diet and fitness program in existence, and learning how to develop adequate self-motivation skills, doors to previously unrecognized potential and the ability to reach and sustain success are unlocked as fitness dreams become reality.