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What it argues
Jim Paul was a successful commodities trader who made millions quickly, only to lose it all and more in a single catastrophic position. Co-written with Brendan Moynihan, this book is his honest account of how that happened — not just the trading decisions but the psychological deterioration that preceded them. What makes it unusual among trading books is its almost clinical self-examination. Paul doesn't just describe what he did wrong; he explains the mental state that made those decisions feel reasonable at the time.
The first half is memoir. Paul recounts his rise from modest beginnings in Kentucky to the heights of the Chicago Mercantile Exchange, where success came quickly enough that he began conflating his identity with his winning streak. When a position in soybean oil started going against him, he didn't cut it. He held and averaged down, rationalizing each decision with market logic that was really ego protection. By the time he finally exited, he had lost everything he'd made and then some, triggering a cascade of personal and professional consequences.
What it gets right
- 1.
Winning in markets is highly individual — there are many styles and strategies that work. Losing is universal: it almost always comes from breaking a few specific psychological rules.
- 2.
Personalizing a market position — letting it become part of your identity — is the primary mechanism by which rational people make irrational decisions.
- 3.
The most important trading decision is not when to enter but when and at what loss to exit. Defining your exit before you enter removes ego from the decision.
What it covers
Who wrote it
Jim Paul was a trader and former governor of the Chicago Mercantile Exchange who built a successful commodities career before a single catastrophic loss wiped out his gains and more. After rebuilding, he spent years studying the psychology of losing in financial markets and co-authored this book with financial writer Brendan Moynihan. The book, originally published in 1994, was reissued by Columbia University Press in 2013 with a foreword by Jack Schwager, author of the Market Wizards series. Paul passed away in 2009; the reissue has introduced the book to a new generation of traders.
