We think we remain the same after we have come to know Christ. But if we take the time to look back we see that the loud screams of the flesh and our emotions that controlled us are drowned out and lessened and we instead can hear the Holy Spirit leading us to do the things of God. We do not realize the change it is so gradual. Our lives are formed not for our pleasure but his Glory. These changes He ordains in his sovereignty. One day we will see the glory that he has gotten from what He has done in us. We cannot see it clearly now.