หนังสือจาก Derek Doepker

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  Break Through Your BS: Uncover Your Brain's Blind Spots and Unleash Your Inner GreatnessDerek Doepker

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  The Healthy Habit Revolution: Create Better Habits in 5 Minutes a DayDerek Doepker
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  Why Authors Fail: 17 Mistakes Self Publishing Authors Make That Sabotage Their Success (and How to Fix Them)Derek Doepker