The Second Half Starts Now is a calm, practical guide to health, confidence, and reinvention after 40. Tamsin Varden Grey helps readers take an honest inventory, support energy, sleep, strength, food, and hormonal health, and build the confidence to change direction. With flexible experiments, healthcare questions, boundary scripts, and a ninety-day map, this audiobook-friendly companion makes midlife feel like an opening rather than a verdict. Educational information only; not a substitute for individualized medical care.