My next BIG STEP was about ten years later.
A student wanted help improving his pronunciation. I listened to him speak. His pronunciation was fine.
But there was something off. Then it hit me. His rhythm was not natural!
I spent the next two years studying rhythm with my students. I discovered they needed to recognize the rhythm. Then I discovered English rhythm makes hearing some words VERY difficult for some learners. They simply needed practice.
They needed to learn the rhythm of English. The first and easiest step here is simply counting the beats in the words or the sentences.
That is how the Basic Rhythm section of this site was born.