Though I personally never had the opportunity to work with master horseman, Ray Hunt, I have received through my mentors, some of his wisdom.  One thing that was very important to him was the comfort of the horse.  Apparently, when he set out to help another with their horse, he would first check the fit on their gear.  It was important to him for the horse to be comfortable.  This is a teaching that resonates highly with me.  I know that personally, when I myself am uncomfortable, it is hard to focus on the task at hand.  Surely it is similar with a horse.