Your will is the ego part of you that believes you're 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 wants you to constantly acquire evidence of your importance... On the other hand, your imagination is the concept of Spirit within you... with imagination, we have the power to be anything we desire to be.
When your higher self is present, it always promotes peace. If you have a question about whether it is your ego or your higher self speaking, the answer becomes obvious when you ask yourself, Will this bring peace or turmoil to my life? Peace is not found in being right or being hurt or being angry.