Principles, Purpose and Time are the tools of teaching.
Take the time so it takes less time! So many people don't take the time to do it right the first time, and as a result are forced to take the time to do it over and over and over, dealing with the same problem year after year.
Case history: One of our students was showing her horse, and the horse developed a pattern of being difficult to get in the trailer. Every show, trailering would be a fight. The problem did not get any better; in fact, it got worse. After she learned about Natural Horsemanship, when she went to work on trailering (she now knew the principles of Natural Horsemanship), in 30 minutes she could point at the trailer, and her horse would happily walk in.