'Astonishingly wonderful and magical and moving and uplifting and DIFFERENT.' Marian Keyes Abigail Sorensen has spent her life trying to unwrap the events of 1990. It was the year she started receiving random chapters from a self-help book called The Guidebook in the post. It was also the year Robert, her brother, disappeared on the eve of her sixteenth birthday. She believes the absurdity of The Guidebook and the mystery of her brother's disappearance must be connected. Now thirty-five, owner of The Happiness Café and mother of four-year-old Oscar, Abigail has been invited to learn the truth behind The Guidebook at an all-expenses-paid retreat. What she finds will be unexpected, life-affirming, and heartbreaking. A story with extraordinary heart, warmth and wisdom. PRAISE FOR GRAVITY IS THE THING 'I loved this book. It's rare for me to have no idea where a story is headed but I only knew that I didn't want it to end. Funny, heartbreaking and clever with a mystery at its heart.' Jojo Moyes 'A brilliant, beautiful, hilarious, heartbreaking, extraordinary book. I say this without bias, only awe.' Liane Moriarty 'Jaclyn Moriarty writes with such intimacy and charm, it's like talking to your dream best friend. But then she weaves a story so compelling, and heartbreaking, and profound, it could only have come from an extraordinary writer.' Laura Bloom 'A thoughtful, beautifully written, truly original, and often hilarious meditation on loss, hope, the self-help industry, and the difficulties of navigating life on earth.' Emily St. John Mandel