Read a review of Susan Sontag's diaries in Time, which obviously is not quite the same as reading the diaries themselves. But inspired by the tone. Against Interpretation was one of the lodestars of my younger teenage self, at least in writing style. Perhaps better to write out thoughts to self in blog, Twitter-style.
The Sontag-Annie Leibovitz relationship has always intrigued me. That much talent in one relationship!