Perhaps the most famous example of diary writing is the book "Anne Frank: The Diary of a Young Girl." This book is a collection of the writings of Anne Frank while she was in hiding with her family during World War II.
Frank received a diary from her parents on her 13th birthday, in June 1942. She and her family were Jewish and lived in the Netherlands. On July 6, 1942, they were forced to go into hiding from the Nazis. Frank took her diary with her and wrote in it nearly every day until the family was betrayed, discovered by the Nazis and deported to concentration camps.
In her diary, Frank wrote of many things that young girls of today can sympathize with. She mentions the boys she liked, how close she was with her father, disagreements with her mother and how much she admired her older sister. Frank writes about her dreams for the future and her annoyances and frustrations about being cooped up in their hiding place. The diary abruptly ends a couple of days prior to her and her family being discovered.
Frank died in the concentration camp, just a few weeks before the prison was liberated. Her father, Otto, was the only survivor, and he published her diary after his friends persuaded him to submit it for publication.