There are times when I struggle with what to write in my blog. Annie Dillard is often a source of inspiration.
Write as if you were dying. At the same time, assume you write for an audience consisting solely of terminal patients. That is, after all, the case. What would you begin writing if you knew you would die soon? What could you say to a dying person that would not enrage by its triviality?
What will come of this? What would I write if I wrote as if I were dying?
 The Writing Life; Annie Dillard; 1989.