"Atomic Habits" by James Clear is a guide to building good habits and breaking bad ones through small, incremental changes. Clear presents a framework based on four laws: make it obvious, attractive, easy, and satisfying. By focusing on tiny adjustments rather than massive shifts, the book shows how these small habits compound over time to create remarkable results. It emphasizes the power of consistency, the importance of creating a supportive environment, and the idea that sustainable change starts with improving systems rather than just setting goals.