It controls our reason, our intelligence, our emotions and our abilities. God has not set Himself up as our Divine Dictator, but rather as loving Discipler, and thus, He has given us the free choice to either deny Him or to follow Him. His perfect will is that we render back to Him that which we have so long claimed as our own-namely, our own will. Our will is important because it's the bridge over which our faith must travel . As we have said before, we don't necessarily have to understand all that God does in our lives, but simply have the faith and the trust to choose to obey His will.
Life is simply a series of ongoing choices.
Choosing by faith to follow God, is where we place ourselves in the hands of God and freely allow Him to direct our paths. Choosing according to our emotions, is where we willfully quench God's Spirit and shut Him out of our lives completely. His answer to this problem was to give us His Life. As Christians, God has given us the freedom to either choose, moment by moment, to follow His Spirit and believe and trust in Him, or to follow the flesh and believe and trust in ourselves. Here's a wonderful example that illustrates the power of our choices.