New self-improvement books gain popularity for the new year

Three new self-improvement books are gaining attention for the new year. "The Let Them Theory" by Mel Robbins encourages readers to focus on themselves rather than trying to change others. It has quickly become a bestseller. "The DOSE Effect" by TJ Power, releasing on January 21, explains how to optimize brain chemicals like dopamine and serotonin for better health. The book offers practical tips for improving daily habits. "Born to Walk" by Mark Sisson, also out on January 21, challenges the running craze. Sisson argues that walking is a more effective exercise for overall health than running long distances.