Kaizen is a Japanese philosophy of continuous small improvements in personal or organizational processes to reach goals. For personal success, it involves identifying areas for improvement, creating daily plans for small changes, checking progress regularly, and adjusting plans as needed. The Harada Method is an effective approach using tools like long-term goal sheets, 64-element charts to break goals into tasks, and checklists to track daily progress. Persistence is key to achieving goals through continuous incremental improvements over time.