How to Propagate Purple Heart, aka Inch Plant

Someone told me recently that the way you keep a plant forever is to propagate it. This concept blew my mind. I thought you just kept the plant forever, watering it some. Picking off dead leaves. Not so. And now I forgive myself for the plants I couldn't keep going on my failed life-support plans.

Hanging basket plants like this purple heart here (photo below), they need to be regenerated too. His head will get all scraggly with aging growth that can't quite get enough light. It's not all my fault that it looks worn. The lasting life of a plant is a topic for continued discussion, but for now, let's talk about propagating Purple Heart, also known as Inch Plant.