Just curious...How do others categorize things they need to keep in their mind occassionally.For example, I'd like to make sure I keep up on maintaining my car, but it's easy for me to let things like that go until it becomes an acute problem that needs to be dealt with immediately. Any suggestions for including things like that in the GTD system?I use two main programs on my Pocket PC, Pocket Informant and ListPro. ListPro is a list maker that I use for my, well, lists. Pocket Informant is an upgrade to the built-in Calendar.For things I need to keep in mind, it depends on the type of task. If it is something in the future, I would probably put it on the Someday/Maybe list and when I was doing a review I would move it to a context list to be actively worked on when the time was right.You could also use a ticker (I don't have one, I just use a calendar). Say you needed to change your oil three months from now, you could stick a note in the "August" folder (assuming it is now May) and when you get to August you will find the note to remind you it needs to be done. There is one other type of task that I find doesn't fit into either of those categories. It is a repeating type of task. An example of this is one I have on-going now. We are taking a family trip in December and there are always deals on rental cars, but these deals come and go. I have a website that I go to to review them. Putting "check rental car prices" on an @computer list may work, but even though I have "checked the rental car prices", the task shouldn't drop off until I have booked a car. Even if I called it "book a rental car", I'm not really doing that and I could see myself letting it slide after a few weeks of checking because I can't remember if I have recently checked it or not. How I deal with this is to set up a recurring task to my calendar that will regenerate 14 days after I check it off. So on my calendar, I see "check rental car prices", I don't need to do it that day and if I don't it will carry over to the next day until I check it as complete. Once I do check it as complete, i.e. I've checked the prices, it will regenerate in 14 days. So I don't have to worry about remembering if I've checked or when I checked.