Longevity: Your Choice by Trevor Douglas argues that ageing well and extending healthspan is largely within personal control, shaped more by daily habits than genetics. It focuses on practical lifestyle pillars—balanced nutrition, consistent physical activity, quality sleep, stress reduction, and strong social and mental engagement—as the foundations of long-term health. The book encourages readers to move away from quick fixes or extreme regimens and instead build sustainable routines that compound over time. Its central idea is that small, consistent choices made across years significantly influence not just lifespan, but the quality of those years.