"And now, brethren, I commend you to God, and to the word of his grace, which is able to build you up, and to give you an inheritance among all them which are sanctified." Acts 20:32.
To grow as a child of God, you've got to study the Word of God. You're to constantly meditate on the Word and it'll metamorphose you. It's important to note once again that it's what you read, watch and listen to, that makes you.
"For if anyone only listens to the Word without obeying it and being a doer of it, he is like a man who looks carefully at his own natural face in a mirror; For he thoughtfully observes himself, and then goes off and promptly forgets what he was like" (James 1:23-24 AMP).