Do not conform to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God's will is-- his good, pleasing and perfect will.
This verse implies it will actually change the way we think, and change the way we see the world as we grow closer to God. I can say this does happen to me now, from time to time, when I am faced with a decision. I may hear the Holy Spirit speaking in my ear and recognize that my decision can honor God. In the past I may have more often gone with what felt the most comfortable, or gave me the most "free time". I still do this, I am sure, but I am also "transforming"!
Holy Lord, help me to see your will, your "good, pleasing and perfect will." Amen