I have three journals that I'm currently keeping up: A dream journal, which really is interesting and helpful (for evaluating the health of my psychological state, hah). I've only really started focusing on maintaining it for this last month. A day-to-day journal, which just holds my average retelling of my daily encounters. I've had this one for several months, but never had the patience to maintain it. I also throw in any poetry or stories I write, and I keep it on me most of the time for that purpose. And finally a reading journal, which isn't really as sophisticated as it sounds. I mostly just use it to keep track of books I'd like to read, and crossing them off as I finish them. It's satisfying to see my progress on the list. I've had this one for over a year, and it's the one I use and read most frequently.