REFERENCES Goggins, D. (2018). Can’t Hurt Me: Master Your Mind and Defy the Odds. USA: Lioncrest Publishing. King, A. (2019). SELF DISCIPLINE FOR SUCCESS: How to use the power of Self Discipline to get the life you want. Simple Strategies to change your mindset and improve your willpower to achieve your goals. USA: Independently published. Moore, R. (2019). I’m Worth More: Realize your real value and earn your success. New York, United States: Quercus. Moore, R. (2019b). Start Now, Get Perfect Later (Reprint). New York, United States: Teach Yourself. Ray, G. (2018). Self Discipline: A How-To Guide to Stop Procrastination and Achieve Your Goals in 10 Steps Including 10 Day Bonus Online Coaching Course to Master Self-Discipline and Build Daily Goal-Crushing Habits. USA: Amazon Digital Services LLC - Kdp Print Us. Roll, R. (2013). Finding Ultra: Rejecting Middle Age, Becoming One of the World’s Fittest Men, and Discovering Myself. New York, United States: Three Rivers Press. Tolle, E. (2001). The Power of Now: A Guide to Spiritual Enlightenment. London, England: Hodder and Stoughton. Willink, J., & Babin, L. (2017). Extreme Ownership: How U.S. Navy SEALs Lead and Win (New Edition). New York, United States: St. Martin’s Publishing Group. Willink, J., & Babin, L. (2018). The Dichotomy of Leadership: Balancing the Challenges of Extreme Ownership to Lead and Win (1st ed.). New York, United States: St. Martin’s Press.