Boundaries by Henry Cloud and John Townsend is a self-help book that teaches readers how to set healthy limits and boundaries in all areas of life. It provides biblical and psychological principles to help individuals say “yes” to what they value and “no” to what they don’t, addressing common issues like guilt and fear that arise when setting boundaries with family, friends, and coworkers. The book is based on the authors’ psychology practice and helps define personal responsibility, covering types of boundaries like physical, emotional, mental, and spiritual.