We believe that it's a true statement to say that "a believer's level of maturity is the degree to which the Holy Spirit has been able to change their inward value system in His direction."
If the believer allows the Holy Spirit to transform their convictions and values what happens to the behavior? It is going to follow. It cannot not follow. Behavior is a result of inward values. All of us act according to our value system.
Our outward behavior is a reflection of what's important to us. God wants to change our inward thinking - our inward value system - our inward convictions because the behavior is naturally going to follow.
The video below, reveals that many parents think discipline (of their children) is all about shaping proper behavior by manipulating reward and punishment. That's not discipline that's behavior modification.
The same can be said of many believers in the Church today. Many believers are very good at manipulating their behavior to "appear" to behave correctly, but NOT allowing God to transform their thinking which will produce the behavior that is pleasing to Him.