Romans 12: 2
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.
A person with a renewed mind has a choice as to what he/she wants to do or be in life.
Paul in this scripture calls believers to a transformed life, a life that is not conformed to that of the world. I strongly believe that no one can live a transformed life without a renewed mind.
Transformation starts from the mind. The only way you and I can recognise the perfect will of God for our lives is to have a renewed mind.