In. This. Moment. is the first full-length biography of Dr. David Paul (1955–2023) — trader, educator, and one of the most quietly influential figures in modern trading psychology. Blending biography, market wisdom, and psychological insight, this book traces Paul’s journey from Royal Marines officer and engineer to globally respected trading mentor. Along the way, it reveals the principles that defined his work: discipline over impulse, simplicity over complexity, expectancy over prediction, and presence as the trader’s ultimate edge. Drawing on decades of publicly available lectures, seminars, and interviews, In. This. Moment. reconstructs Paul’s thinking with care and precision. It explores how he approached markets not as a place for certainty, but as a disciplined practice in probability, emotional control, and self-mastery. His teachings on money management, the Wyckoff Spring, trend structure, and pressing winners are presented not as mechanical systems, but as expressions of a deeper philosophy: survive first, execute cleanly, and let expectancy do the work. This is not a trading manual promising shortcuts or guaranteed profits. It is a reflective portrait of a man who understood that the hardest part of trading is not analysis — it is behaviour. Paul taught traders how to remain calm when it felt hardest, how to act without hope or fear, and how to stay in the game through inevitable losses and uncertainty. Written in a clear, narrative style inspired by Best Loser Wins , this book will resonate with traders, investors, and readers interested in decision-making under pressure. It is both a tribute and a practical meditation on what it means to trade — and live — with clarity. The market will hurt you. The task is to stay in the game.