Are you a follower of God? Have put off your former conversations and put on the new man? If you are speaking with deceit and are greedy for what you don't have, it is time to take another look in the mirror at the life you are living.
I do not know of any Christian that does not struggle between "Two Natures" that some call good or evil. We do not understand why we do what we do. We tend to do what we should not do even when we want to do good.