Life is full of lessons to help us cope with everyday life. Sharing our lessons can be beneficial to many people and help to prevent some mistakes we generally make that can be prevented. When something profoundly changes a person's life, it may be referred to as a life lesson. A life lesson is just what it sounds like -a lesson you learn in life. It's really based on the idea of learning from your mistakes. These lessons could be described as defining moments that are remembered.