Broke, ill, and single, something had to give for journalist Jacqueline Raposo. She recounts the radical ways in which her life changes when she abstains from habits like social media, shopping, sugar, and negative thoughts for periods of thirty to ninety days over the course of one calendar year. In this intimately curated quest for self-improvement -- a quest that readers can easily personalize for themselves -- she confesses to the sometimes violent and profound shifts in her social interactions, physical health, and sense of self-worth. With the input of doctors, psychologists, STEM experts, and other professionals, she offers fascinating insights into how and why our brains and bodies react as they do to our habits, and sheds light on the impact our everyday choices have on our mental state.