I have found them to be friends over the years, kind of like coming home from a long vacation. It gives you a chance or forces you to stop and really think about your playing. They typically end with a break through like a new technic, that after time, you lose your ability to be impressed with.
New plateau hit.
Guitartricks has so much to offer here to bust plateau’s, just watch a new instructor teaching another style. A new technic can’t be far away.