The prayer journal system can even be used by kids! All 4 of my kids (ages 7-12) use it!
It is a lot of work to set up but once you do, you will be amazed at how easy it is to manage all your "lists" and the flexibility is provides in praying through everything.
If it's too time consuming for you to make your own prayer journal system, just sit tight until I have the work all done for you! My target is to have it published by early 2014.