Use a mnemonic, any learning technique that aids information retention. Here are some examples: Roy-G-Biv, the colors in the spectrum of light (red, orange, yellow, green, blue, indigo, violet); Every Good Boy Does Fine, the notes (EGBDF) on a treble clef; or HOMES, the Great Lakes (Huron, Ontario, Michigan, Erie, Superior).

Find or create a mnemonic that works for you, that makes it easy to recall the information you need. In my story, Knowing Where to Tap, I need to repeat the dollar amount of a very expensive invoice. To make sure I get the number the same each time, I use the amount, $10, 543.21. Ten Thousand is a good round number, easy for me to remember. Then, I start from five and work backwards (5,4,3,2,1). "Ten thousand, five hundred, forty-three dollars and twenty-one cents." I can even visualize that number when I say it.

In Mikku and the Trees, I use an alphabetic progression to remember all the trees he encounters and what they provide: Birch/Baskets, Cherry/Pie, Maple/Syrup, Pine/Cones and Walnut/Nuts.