Deep Focus

The book

The conversation around focused work has been shaped more by popular mythology than by the research it claims to cite. Deep Focus starts instead from what the studies actually show — Gloria Mark's measurements of how long attention takes to recover after an interruption, Sophie Leroy's work on attention residue, and honest data on how knowledge workers' time is structured in 2026 — and builds a practical framework from there. Nina Brooks is skeptical of productivity theater and the idea that the right morning routine solves a structural problem. The book is about designing conditions for real cognitive work, not performing the appearance of them.

What you'll learn

• Why the cognitive cost of switching tasks is larger and longer-lasting than most people estimate, based on measured interruption recovery times
• How to design your week before your day — and why that sequence matters for protecting your best working hours
• What attention residue is, how it accumulates silently across a standard workday, and how to reduce it without cutting responsiveness
• Which meeting and notification habits reliably destroy focused work, and which specific changes produce measurable recovery
• How focused creative work and focused analytical work require different conditions, and why a single system usually serves neither well
• How to build focus practices into a team without losing credibility to colleagues who treat constant availability as a proxy for effort

Who it's for

This book is for knowledge workers and creators who already know they have a focus problem and are tired of advice that requires either extraordinary willpower or a complete life redesign. Pick it up after a week where you were continuously busy and got almost nothing done, or after a meeting stripped the best two hours from your day and left you with no clear way to recover them.