A Sunday Times Bestseller that redefines anxiety as an addiction-and gives you the tools to finally break the cycle. 

Addicted to Anxiety: How to Break the Habit, publishing for the first time in the United States from St. Martin's Essentials on May 5, 2026. 

At the core of his book is a simple truth: anxiety isn’t just a feeling, it's a habit, one we may be unconsciously addicted to. Even when we desperately want peace from racing thoughts or emotional avoidance, a subconscious belief in the safety of our worry is keeping us stuck. The good news? There are ways to break the cycle.  

With warmth, clarity, and actionable guidance, O’Kane offers tools to help readers identify triggers, challenge core beliefs, and build new habits that lead to a calmer, more empowered life. His signature approach, grounded in neuroscience and psychology but deeply human and accessible, makes complex emotional patterns feel manageable—and changeable.