Gosh, I can relate! I'm in the habit of making notes in my computer calendar, it'll pop up the day before (you can set it as you please). You can even have it pop up several times, and you can have a sound alert etc.

Then, when the reminder pops up, I go and take my Mayland calendar - where I've written it, open it and put it where I'd put my cereal in the morning!

There are quite a few of these calendars you can download for free. Try one!