As I have said before, sin comes naturally to us. We dont have to think about it or plan it. When something happens that we dont like, it is very easy to react in anger. When someone hurts us, it is a natural reaction to lash out.
But when we make Jesus Lord of our lives, we must allow the Holy Spirit to change us. Often this seems to happen from the outside in.
What I mean is that after we become a Christian, we must become aware of our thoughts and actions and take them captive. We must make a concious effort to change. With God's help we can begin to see where we are not in line with Him and make the efforts to bring our hearts and minds into line with Him.
Sometimes He will assist us in very obvious and final ways, other times He allows us to work it out over time.
For example, I was living with a cursing problem. I knew that it wasnt pleasing to God, but I chose those words at first. As time when on, it became so natural to me that I was almost unaware of it and would use the language even at the most inappropriate times. Even though I considered myself a Christian, I thought nothing of the language I used, how it affected others or how it made me look.
But when I finally fully surrendered myself to the Lord, he took that habit from me instantly. I didnt even realize it for a few days, until one of my friends pointed out that I had not been swearing. It was a miracle to me and gave me encouragement and hope. But there are other things that I have struggled with for months or even years before the change was complete.
I think the key to making these changes lies in our willingness to please God. If we are committed to God and truly choose to please Him, He will open our eyes to the things He wants changed. He will convict us, mold us and refine us as we turn to Him. This must be the cry of our hearts and we must stay focused on Him. He is waiting to make these changes and has so much better planned for us than we can ever imagine on our own!