For the flesh lusteth against the Spirit, and the Spirit against the flesh.
Young believer, as long as life on this earth continues, we will always have a battle going on inside us - the old nature against the new nature, and the new against the old. They are contrary the one to the other. They do not agree with each other. One we were born with, the other we received as a gift from God when we accepted Jesus as Saviour. The old makes us miserable when we allow it to act because it is against God. The new pleases God in everything that it does. Ask the Lord to help you to keep the old in the place of death and so let the new have full control of your life.