How to Fight When Your Mind Is Failing by John Piper (2017)

“When the memory simply will not hold on to the promises you want with you during the day, spite the devil and dementia with pieces of paper and iPhone reminders. I am totally serious. When you find the promise in the morning that you want to enjoy all day, write it on a little piece of paper and put it in your pocket. Take it out and read it again and again during the day, especially in the hour of trial []”