I've been keeping a writer's journal, full of writing exercises (i.e. results thereof) and the occasional reflection on process and/or report on progress. Not, perhaps, of much interest to anyone else, but I've regarded it as semi-public just in case. It was always intended mainly for my own reference. For instance, a lot of writing exercises throw up material which could be useful in those memoirs I'm so slowly creating.
But I have this ridiculous number of blogs, so have decided to merge it with this one, and have labelled all its posts accordingly, as 'writer's journal' and many also as 'writing exercises'. This will enable you to avoid them if you think they'll bore you — or look at them if you wish.