"Do not be conformed to this world, but be transformed by the renewing of your mind, so that you may prove what the will of God is, that which is good and acceptable and perfect." (Romans 12:2)
The result of your mind renewal is being able to prove what God's will is. This proving is done by experiential examination of who God is, in other words it is done in a relationship with God.
"You were taught with reference to your former way of life to lay aside the old man who is being corrupted in accordance with deceitful desires, to be renewed in the spirit of your mind, and to put on the new man who has been created in God’s image – in righteousness and holiness that comes from truth. Therefore, having laid aside falsehood, each one of you speak the truth with his neighbor, for we are members of one another." (Ephesians 4:22-25)
Once the old man/falsehood is laid aside we are to "speak the truth with our neighbors." This means that I learn of & submit to Christ so He can renew my mind in order to have me help renew the mind of someone else.