This habit is straight from the well known book, “The 7 Habits of Highly Effective People.” by Stephen Covey. To quote wikipedia on his upward spiral approach:

“In essence, one is always attempting to integrate and master the principles outlined in The 7 Habits at progressively higher levels at each iteration. Subsequent development on any habit will render a different experience and one will learn the principles with a deeper understanding.”

Our development in any endeavor can be seen in this way. As we learn more in one area, we unlock the potential to grow in others. And round and up the spiral we go.