Who moved my Cheese by Spencer Johnson (Used)

Read this as a teenager with a lack of direction and moving into high school life and it gave me so much insight that I still carry now. It’s a very light and easy read and I think that makes it even better because the impact of the message is immediate, you get to the thick of things immediately. The anecdotes made as well are superb, I recommend that everyone read this book at least once in their lives.