*"Willpower gets you started. Habits get you results." - Priit Kalas
*"Willpower gets you started. Habits get you results." - Priit Kalas
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== Books ==
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*[[Willpower: Rediscovering the Greatest Human Strength]] by Roy F. Baumeister and John Tierney. Penguin Press; 1st edition (September 1, 2011)
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*[[The Power of Discipline: How to Use Self Control and Mental Toughness to Achieve Your Goals by Daniel Walter]], Publisher: Independently published (April 8, 2020), ASIN: B086PRLDCB
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*''No Excuses!: The Power of Self-Discipline'' by Brian Tracy. Vanguard Press (March 22, 2011)
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*''[[A Man or a Mouse by Sunday Adelaja|A Man or a Mouse]]'' by Sunday Adelaja. Golden Truth Publishing (August 15, 2018)