A quick tip from RetrievalPractice.org’s e-newsletter today:

#1: Remember your lesson plan with a 1-minute reflection
Can’t remember how a lesson from last semester or last year went? On the bottom or back of a lesson plan, include two questions:
What went well? What should I do differently next time? 
As soon as you’re done with the lesson, take just one minute to write down a note to your future self. Stuff all your lesson plans/reflections into a folder. The next time you teach the lesson, future-you will be glad that past-you retrieved!