A unique blend of scientific research on human behavior and more than 30 years of teaching people smarts, these proven and practical principles help draw out the best in everyone and interpersonal relationships.
ThriftBooks sells millions of used books at the lowest
everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We
deliver the joy of reading in 100% recyclable packaging with free standard shipping on US orders over $10.
ThriftBooks.com. Read more. Spend less.