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James J. Sexton has spent over two decades in the trenches of high-stakes divorce – watching good people tear each other apart over bad communication, broken trust and problems that could’ve been solved early on. If they’d only known what to look for.
How Not to F*ck Up Your Marriage is what he wishes every couple had read before it was too late. This book is an early warning system, a no-punches-pulled guide to the small mistakes, blind spots, and lazy habits that quietly destroy relationships – and the real work it takes to stay in love for the long haul.
From emotional drift to financial landmines to social-media sabotaging, from sex to silence to the granola box that finally breaks you, this is a deeply practical, deeply funny guide to protecting your connection, resolving conflict before it escalates and staying close through real life.
Whether you’re in a relationship, out of one, or wondering if yours will last, this is the relationship book written by someone who has seen how they end – and who, despite it all, still believes in love.

‘Who would have guessed that the person who gives the best advice about marriage was the guy responsible for getting you out of yours?’ – New York Times

'Brutally honest and wildly useful' - Steven Bartlett

© James Sexton 2025 (P) Penguin Audio 2025