Differentiated book- It has a historical context with research of the time-This book contains a historical context, where past events or the study and narration of these events are examined. The historical context refers to the circumstances and incidents surrounding an event. This context is formed by everything that, in some way, influences the event when it happens. A fact is always tied to its time: that is, to its characteristics. Therefore, when analyzing events that took place tens, hundreds or thousands of years ago, it is essential to know the historical context to understand them. Otherwise, we would be analyzing and judging what happened in a totally different era with a current perspective.As a Man Thinketh is a self-help book by James Allen, published in 1903. It was described by Allen as "... [which deals] with the power of thought, and particularly with the use and application of thought for happy subjects and beautiful, I have tried to make the book simple, so that everyone can easily understand and follow his teachings, and put into practice the methods he advises.It shows how, in his own world of thought, every man has the key to every condition, good or bad, that comes into your life and that, working patiently and intelligently on your thoughts, you can rebuild your life and transform your circumstances. The book can be carried in your pocket. "