Self-Discipline: Spartan Discipline: Resist Temptations and Conquer Your Long-Term Goals (Learn Self Confidence, Willpower, Motivation & True Discipline from the Great Spartans and Greek Gods)

Self-Discipline: How to Develop Spartan Discipline, Unbreakable Mental Toughness, and Relentless Willpower (Spartan Self-Control, Self-Confidence, and Self-Awareness)

Self-Discipline: An Ex-SPY’s Guide to Hack Your Daily Habits to Build Unshakable Self-Control, Laser Sharp Focus, Extreme Productivity & Eliminate Procrastination ... Need for Willpower (Spy Self-Help Book 2)

Spartan Fit!: 30 Days. Transform Your Mind. Transform Your Body. Commit to Grit.

Self-Discipline: How to Develop the Mindset, Mental Toughness and Self-Discipline of a U.S. Navy SEAL

Spartan Up!: A Take-No-Prisoners Guide to Overcoming Obstacles and Achieving Peak Performance in Life

Massive Action Equal Massive Results: Learn the Critical Mental Framework to Focus Your Energy, Reach Your Goals Quicker and Live an Insanely Awesome Life

Self-Discipline: Powerful Techniques from Billionaires, Navy SEALs, Spartans, Olympic Athletes, and Entrepreneurs

Power: The Success Mantra: Secrets to Creating Business Success

Self-Discipline: Become A Greek Spartan: Everything You Need to Know to Transform Your Life into A Modern Day Spartan & Gain More Confidence, Hunger and ... (Greek Spartan Mindset, Spartan Discipline)

The Science of Powerful Focus: 23 Methods for More Productivity, More Discipline, Less Procrastination, and Less Stress