There is an emotional force in won't power. It is a defiant emotion. It could very well be. Whether you are a successful will person or a successful won't person, the goal will be the same. You will be using that energy in your striving for an achievement.
Achievements contain an indestructible joy.
Think of a goal you are seriously striving for as already achieved. The joy will be there. If this is sounding familiar, you are correct. Thus we can add the wisdom of joy to our everyday technique of visualization.