How long does it take an infant to become a full-fledged adult? Does an individual have a role to play in his or her development? When you give your life to Christ, it is said that you are a new creature. You have a new spirit that has the nature of God. However, because man is tripartite, the only part of him that is new on conversion is the spirit. His soul needs to undergo refinement. It would require less effort for the body to surrender and execute God’s will if the soul and spirit are in sync with God.
This work of refinement that transforms the soul from the inside out is known as sanctification. Being sanctified is not limited to being made holy, set apart, and cleansed. It also involves conforming to the image of Christ and becoming like Him. It is the process of developing from babes in God to spiritually mature Christians. Childish ways are gotten rid of, old thought patterns and beliefs are dealt with, and we begin to think and act like Christ.
Ultimately, the purpose of this great work is to submit to God's will. However, to get this job done, we must cooperate in total obedience and submission to the Holy Spirit and the agency of the Word.

Dear Heavenly Father, I bless You for making me in Your image and likeness. Thank You for the honor of being fashioned after You. Please open my eyes to see the ongoing good work of Your Spirit in my life. Enable me to know and do Your will. I pray that my ears are inclined to hear and my eyes see clearly as the Spirit instructs me. I put my full trust and confidence in You. 
In Jesus's name I pray. Amen.