The ego is always in us. We can starve it, not pay any attention to it, etc., but it tends to rear its ugly head every chance it gets. Even when we are serving God, we remind ourselves that we are doing something good. In Luke 17.10, Jesus described the attitude a servant should assume by saying, "When you have done all you have been commanded, say, 'We are unprofitable servants; we have done what we were obliged to do.'" The best way to "kill" the ego is to let the Lord fill you to the fullest so that you will be occupied with him alone.