It is a primary source because it is written if first person. Also, they are writing about the thing like they were there. Lastly, It is his own words from his own experience, and not a retelling of the event from another point of view.
The book contains photocopies of Jefferson’s original letters. Not only are these letters Jefferson’s actual words, but the copies also present his words in his own handwriting. While the page isn’t the actual letter, Jacob is quoting Jefferson’s actual words and thoughts. Therefore, the book is a primary source document.
Why believing in yourself is so important: A strong belief in yourself can bring you all these benefits and more: You recognise your ability to accomplish goals