Kaizen is a Japanese philosophy of continuous improvement involving gradual, orderly changes to improve processes and eliminate waste. The two key elements of Kaizen are continuous improvement and ongoing changes for the better. It focuses on making small improvements across all areas of a process or organization, including processes, machines, quality, products, human capabilities, work environment and more. Kaizen aims to eliminate waste using techniques to address the seven types of waste. It provides tips for activities like not seeking perfection initially, starting with small improvements, using wisdom over money for changes, and seeking input from multiple people.