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Have you been looking for a way to improve an aspect of your life? If so, you’re not alone. A growing number of people are realizing that they want to improve themselves and are turning to self-improvement books to do so. Self-help book sales in the U.S. nearly doubled between 2013 and 2019, reaching 18.6 million units, according to The NPD Group, a market research firm. Sales of motivational and inspirational books, the most popular category of self-help books, more than tripled over the same period. If you’re interested in developing a new perspective or working toward a long-term goal […]