Have you ever been in a place where you continued to do what you knew was wrong or you specifically did not do what you knew was right?
It is called sin, for either side of this.
Look at Romans 7:15-20 Paul is in this same situation in this passage. He is showing the importance of the law and that what we choose (flesh we, not christlike we) will always choose incorrectly. This is why we must laydown our lives, die to self, everyday.
Today I choose death, how about you?