In Bird by Bird, Anne Lamott is everything you could hope for in a writing confidant--funny, self-deprecating, wise. We love her so much, we're going to pretend this is a writing prompt:
"When you don't know what else to do, when you're really stuck and fiiled with despair and self-loathing and boredom, but you can't just leave your work alone for a while and wait, you might try telling part of your history--part of a character's history--in the form of a letter. The letter's informality just might free you from the tyranny of perfectionism.
You might address the letter to your children, if you have a few lying around, or to a niece or nephew, or to a friend. Write that person's name at the top of the page, and then in your first line, explain that you are going to tell them part of your story, entrust it to them, because this part of your life meant so much to you."
--Anne Lamott, Bird by Bird: Some Instructions on Wrtiting and Life (Anchor Books, 1994)