Understand the change we are talking about is a decision of the mindset which can combat the carnal flesh and desires that we have. It is the Apostle Paul that said I do not understand what I do. For what I want to do I do not but what I hate to do Romans 7:15. He is saying that he flesh and body automatically does things that it hates. It is similar to two magnets attracting together. One end is a positive pole and the other end is a negative pole. The “+” and “-“attracts each other until they come together. That is what sin does to our carnal flesh; it attracts the sin. Galatians 5:17 says or the flesh craves what is contrary to the Spirit, and the spirit what is contrary to the flesh. Both are opposed to one another; so that you do not do what you want. I can understand this because sometimes our unconscious mind takes over and do what we have been preconditioned to do. Even though I consciously try to be good in my own action, I can’t because something is always pulling me back (think back to the magnet example).
We have the victory. Jesus gave us the victory when he took himself to the cross to die, defeat and rise from our problems, issues and mistakes. He not only died for our sins but everything we have done and everything we will do. 1 Corinthians 15:57 says but thanks be to God, who gives us the victory through our Lord Jesus Christ. His victory is our gain. His victory solves every problem we have to combat life issues.