Jennifer Graber

In her latest groundbreaking book, The Let Them Theory, Mel Robbins—New York Times bestselling author and one of the world's most respected experts on motivation, confidence, and mindset—teaches you how to stop wasting energy on what you can't control and start focusing on what truly matters: YOU. Your happiness. Your goals. Your life.

Sunshine Mackenzie truly is living the dream. A lifestyle guru for the modern age, Sunshine is beloved by millions of people who tune in to her YouTube cooking show, and millions more scour her website for recipes, wisdom, and her enticing suggestions for how to curate a perfect life. She boasts a series of New York Times best-selling cookbooks, a devoted architect husband, and a reputation for sincerity and kindness - Sunshine seems to have it all. But she's hiding who she really is.

In 2004, in a stunning upset against the two-time defending champion Serena Williams, 17-year-old Maria Sharapova won Wimbledon, becoming an overnight sensation. Out of virtual anonymity, she launched herself onto the international stage. "Maria Mania" was born. Sharapova became a name and face recognizable worldwide. Her success would last: she went on to hold the number-one WTA ranking multiple times, to win four more Grand Slam tournaments, and to become one of the highest-grossing female athletes in the world.

For David Goggins, childhood was a nightmare--poverty, prejudice, and physical abuse colored his days and haunted his nights. But through self-discipline, mental toughness, and hard work, Goggins transformed himself from a depressed, overweight young man with no future into a US Armed Forces icon and one of the world's top endurance athletes. The only man in history to complete elite training as a Navy SEAL, Army Ranger, and Air Force tactical air controller, he went on to set records in numerous endurance events.

Fifteen-year-old Ellie Mack was the perfect daughter. She was beloved by her parents, friends, and teachers. She and her boyfriend made a teenage golden couple. She was days away from an idyllic summer vacation, with her whole life ahead of her. And then she was gone. Now her mother, Laurel Mack, is trying to put her life back together.

Debilitating brain disorders are on the rise - from children diagnosed with autism and ADHD to adults developing dementia at younger ages than ever before. But a medical revolution is underway that can solve this problem: Astonishing new research is revealing that the health of your brain is, to an extraordinary degree, dictated by the state of your microbiome - the vast population of organisms that live in your body and outnumber your own cells 10 to one.