Study Smarter: Master Any Subject with the RETAIN Method is a practical guide for anyone who wants to stop forgetting what they study and start building knowledge that lasts. Most traditional study methods — re-reading, highlighting, and cramming — create the illusion of learning without helping you truly retain information. This book introduces the RETAIN Method, an 8-phase system designed to help you learn faster, remember longer, and apply knowledge with confidence. Inside, you'll learn how to: • Use Active Recall to strengthen memory and improve retention • Apply Spaced Repetition to beat the Forgetting Curve • Encode information deeply using the Feynman Technique • Build flexible understanding through Interleaving and mental models • Create sustainable learning habits that actually stick • Turn information into real-world expertise instead of temporary memorization Built on modern cognitive science and real-world learning psychology, this book gives you a complete framework for mastering difficult subjects more efficiently and with less stress. Whether you are a student preparing for exams, a professional learning new skills, or a lifelong learner trying to stay ahead in a fast-changing world, the RETAIN Method will help you study smarter, retain more, and perform at your best. Stop studying harder. Start studying smarter.