What's the quickest way to ruin a friendship? Can bosses actually learn something from marriages? Are very close friendships in the workplace such a bad thing?

These are just a few of the questions that #1 New York Times bestselling author Tom Rath asked when he embarked on a massive study of friendships. Along with several leading researchers, Rath pored through the literature, conducted experiments and analyzed more than 5 million interviews from Gallup's worldwide database.

His team's discoveries produced Vital Friends, a book that challenges long-held assumptions people have about their relationships. And the team's landmark discovery -- that people who have a "best friend at work" are seven times as likely to be engaged in their job -- is sure to rattle the structure of organizations around the world.

Drawing on research and case studies from topics as diverse as marriage, management, and architecture, Vital Friends reveals what's common to all truly essential friendships: a regular focus on what each person is contributing to the friendship -- rather than the all-too-common approach of expecting one person to be everything.

Rath's fast-paced and inviting storytelling takes a mountain of important research and makes it remarkably accessible and applicable. By the time you finish reading Vital Friends, you'll see your family, friends, coworkers and significant other in a whole new light.

While focusing on the emotional and spiritual struggles that accompany infertility, Glahn and Cutrer also provide detailed information on associated medical issues and fertility treatments and alternatives. Questions at the end of each chapter and lists for recommended reading promote further discussion while case histories and personal testimonies make the facts relatable. With a sensitive touch and trusted advice, Glahn and Cutrer offer encouragement and hope for couples struggling with infertility.