A paper prayer journal has never worked well for me. There's just too much maintenance in it. New requests are added; old ones are answered; one-time requests for surgeries or evangelistic meetings eventually expire. The thought of tracking all those changes with mere pen and paper is craziness to a geek like me. No, a useful prayer journal must be electronic. For me, it just must. See how I use Evernote for now as my electronic prayer journal, and let me know what you use.