Suffering from a mood disorder (PMDD) and exhausting her options, writer Ayelet Waldman tries microdosing. A Really Good Day is part comedic mental health memoir, part account of her 30-day experiment taking tiny, subperceptual amounts of LSD, and part research into the history, risks & rewards, and future of psychedelics. Waldman is funny, candid, and self-aware. This is a frank and accessible introduction to the idea of psychedelics as medicine.