Yes, my beliefs have matured is a better way of putting it. The more I live in righteousness the more the Holy Spirit enlightens my spirit and then I let God enlighten my mind as well. This is normal as a Christian. It is relational.
Humility resulting in pliability thru training in righteousness has a positive and essential place in the lives of God's people. This holds true in both the Old and New Testaments. God's people had to learn how to be obedient to His will, to become more and more like their Lord. This was accomplished through "the discipline of the Lord" (Deut. 11:2 NIV). God deals with His people very much the same today, for "the Lord disciplines those he loves" (Hebrews 12:6a). Scripture teaches us "God disciplines us for our good, that we may share in His holiness" (Hebrews 12:10b NIV). As we can see from this passage, the discipline of the Lord produces holiness. Verse eleven goes on to say "..it produces a harvest of righteousness and peace for those who have been trained by it."
Discipline refers to the process by which one learns a way of life. A disciple was like an apprentice who was learning a trade or craft from a master. Such learning required a relationship between the master who knew the way of life (discipline) and a learner (a disciple). Within this relationship, the teacher led the learner through a process (the discipline) until the learner could imitate or live like the master. Jesus taught this very concept in (Luke 6:40), "A student is not above his teacher, but everyone who is fully trained will be like his teacher."
When Jesus called the twelve, it was to establish a Master-learner relation with them. As they lived and worked with Him, Jesus disciplined them unto a way of life that was pleasing to God. Such discipline involved praise and criticism, affirmation and rebuke. Today, Jesus does the same, through His church. He seeks people willing to learn; people who are pliable and moldable unto His likeness.