"A Really Good Day" by Ayelet Waldman is a poignant and personal account of the struggle with extreme mood swings and depression. The author, who is also known as a writer, describes her desperate attempts to try various medications to cope with her mental health challenges. In a pivotal moment, she receives a package containing liquid LSD, which prompts her to conduct a self-experiment. Over a period of thirty days, she documents her experiences and reflects on the options available to help ourselves. Waldman openly shares her fears and hopes, encouraging readers to consider alternative paths to healing. Her diary is not only a personal narrative but also an invitation to discuss mental health and the pursuit of happiness.