Horses are large and powerful, which creates a natural opportunity for some to overcome fear and develop confidence. The size and power of the horse are naturally intimidating to many people. Accomplishing a task involving the horse, in spite of those fears, creates confidence and provides for wonderful metaphors when dealing with other intimidating and challenging situations in life. Horses mirror moods, too; they respond negatively to negative emotions, teaching the client that his behavior can affect others, and making it necessary to modify behavior in order to work successfully with the animal.