Recommended: The journal of Marcus Aurelius is essential reading if you want a clear and focused mind
This article describes the work of Pennebaker in studying power of journaling for those who are out of work.
[Excerpt] At 17, Marcus Aurelius was adopted. It made him heir to the throne of Rome. Born into a wealthy family, Aurelius was primarily raised in the household of his grandfather. Both his parents passed away relatively early in his life. From the start, his defining characteristic was his pursuit of knowledge.