In 2014, simplicity expert Leo Babauta published his masterwork, Zen Habits: Mastering the Art of Change. Then, in 2015, he published a new, abridged version, Essential Zen Habits: Mastering the Art of Change Briefly, aimed at readers who didn't care about the underlying theory laid out in the first book but just wanted the basic steps needed to quit bad habits, deal with life struggles, and practice mindfulness-a compact series of instructions with...