Try to imagine willing yourself to do something that your imagination doesn’t want you to do. Your will is the ego part of you that believes you are separate from others, separate from what you’d like to accomplish or have, and separate from God. It also believes that you are your acquisitions, achievements, and accolades. This ego will want you to constantly acquire evidence of your importance. It pushes you towards proving your superiority and acquiring things you’re willing to chase after with hyper dedication and resolve. On the other hand, your imagination is the concept of Spirit within you. It’s the God within you. Here is William Blake description of imagination. Blake believed that with imagination, we have the power to be anything we desire to be :
I rest not from my great task! To open the eternal wounds, to open the immortal eyes of man inwards into the worlds of thought; into eternity, ever expanding. In the Bosom of God, The Human Imagination.
Now go back to the idea of willing yourself to do something when your imagination says no. And example of a fire walk comes to my mind. You can stare at those hot coals and will yourself to walk across them, and if you rely exclusively on your willpower, you’ll end up with severe burns and blisters. But if you imagine yourself divinely protected, in Blake’s words, in the Bosom Of God, and can see yourself in your imagination able to be something beyond your body, you can accomplish the fire walk unscathed. As you imagine yourself impervious to the heat of the red-hot coals, you begin to feel yourself as something beyond your body. You visualise yourself as stronger that the fire. Your inner picture of purity and protection lets you will yourself to walk across the coals. It’s your imagination that allows you to be safe. Without it, you’d be scorched.
Reference : The Power of Intention. Dr. Wayne W. Dyer.