In Discipline Equals Freedom: Field Manual Mk1‑MOD1 (Expanded Edition), former Navy SEAL Jocko Willink refines his mantra—that discipline is the gateway to freedom—by intertwining new mindset essays with actionable routines. This edition preserves the original’s clear split—first exploring mental toughness, then practical application—but bolsters the first half with fresh themes like emotional clarity (Sugar Coated Lies), value alignment (Do What Makes You Happy), and uncompromising strength (Don’t Negotiate with Weakness). Roughly an extra 48 pages deepening the philosophical layer, it offers strategic insights into self‑deception, motivation, and daily mindset architecture. The workouts and guidance on sleep, nutrition, and training progression remain the same, making the expansion largely philosophical rather than functional. Whether you’re driven by mental refinement or physical discipline—or both—this edition offers an enriched experience.