Dominic finally discusses the first 'practical' application of the memory palace - the mental diary in the fifth chapter of his book. The method of procuring a mental diary is as easy as the name suggests. You simply make a mental journey consisting of 31 locations, one location for each day (in a month without 31 days just don't put anything on the 31st day). He emphasizes that the journey should be one that brings a bit of 'happiness' because if you check your schedule each morning you do not want to depress yourself. To add another month, simply come up with another journey, preferably one that is connected. His journey started on a lookout tower that overlooked two pathways each leading to a different town. Standing on the tower, he could easily see what his schedule looked like for the next two months and he could easily tell at a glance if any part of the month got congested with things to do. Once you have your journey, you simply input images that will remind you of the event that you have going on on that day.
Including time into the diary is easy. Using the Dominic System, or person action person (previously discussed in one of my posts), and a 24hour clock, he simply applies the person and action representing the time of an appointment to the image that reminds him of what the appointment is. For instance, if he has a doctors appointment at 2pm on january 6th (the image is located at his willow tree), he imagines his doctor drilling a hole into the tooth of Arthur Askey (14).