- Based on the Japanese principle of Kaizen, which means 'improvement' or 'small, permanent change for the better', the Zen Diet ensures you will never be 'on' another diet ever again - The Zen Diet... This description may be from another edition of this product.
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 recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.