In this You Tube clip Richard Petrie gives a nice little demonstration of why visualization and emotion are so important for reaching our goals. The subconscious mind is the real power that moves us forward but it uses a different ‘language’ than the conscious mind. It uses images and emotion.
A key point that is mentioned in the comments below the video is the importance of getting really relaxed as you work with your images. I call it the daydreaming mode. Daydreaming about the end result helps to create the emotion that will move you toward your vision. Enjoy!