Human will is a remarkable attribute. Some people can use it to form an ego so large it pushes God out of the universe and reduces him to nonexistence. Other people use their will to follow Christ and the other martyrs to death for sake of their faith. From these extremes it can be seen that there is such a free aspect to our wills that they can be used to honor God or curse God.
If we search for free will elsewhere in the physical realm, other than in humans, we will not find it. It was given to us by God and is, I believe, part of what is written of us when we are told we were created in the image of God. Our autonomous wills are unique to humans in the created universe. Every other physical part of us is shared in some way with the remainder of God’s world.
Our wills burden us with a tremendous and terrifying responsibility. We are accountable for all the choices we make. We cannot make God or Satan responsible for the choices we make. Yet our choices lead us to a final decision after the end of our lives on earth as to whether we will dwell eternally with God or not. What help is there for us in such a situation.
Fortunately for us, while our wills are free they are not beyond divine spiritual influence. When the Holy Spirit redeems our spirits he also gains the power in us to change our wills over time so our choices become more and more aligned with God’s purpose for us. Unfortunately for us, we will always a ways to go. That is why our wills are not going to be perfected as long as we live in this world and why we must look forward, I believe, in hope for resurrected bodies and minds that will perfectly do what God would have them do.