Talk to yourself, apparently George Sand did. Another way of clearing out the detritus in your mind. Tell someone how it really is, in writing knowing that you will not send it. She has written a book, The New Diary and the Scribe Tribe . There is also a Center for Autobiographic Studies.
Radio can be a commentary.
Radio can be a conversation. Radio can be an audio postcard. They provide lots of good information and advice to help use this medium. Well worth a visit. I keep an audio journal, having started by sending tapes to a distant friend.