I had a Thoroughbred a few years ago who taught me this lesson. If I rushed him through grooming and tacking up, he gave me nothing. It took me twice as long to get my planned training done. If I walked into the barn with plenty of time to calm him with a good brushing and spent the time to explain what we might be able to accomplish with the next hour, our training session went twice as fast. (Not to mention with twice the enjoyment for us both.) Animals are wonderful teachers.