Keep It Simple - Interest

I taught a class about interest to some young children recently. It was a great reminder to keep it simple. I wanted to keep repeating or coming back to the main concept, since repetition does help us remember. At the end of a class, ideally, we want to make sure something was learned and the main takeaway was, well, taken away.

I'm a perfectionist, so I often get stuck. I've found I can usually get unstuck when I remember to keep it simple. What is something you keep simple?