Any training – physical, mental, or spiritual – is characterized at first by failure. We fail more often than we succeed. But if we persevere, we gradually see progress till we are succeeding more often than failing. This is true as we seek to put to death particular sins. At first it seems we are making no progress, so we become discouraged and think, What’s the use?! I can never overcome that sin. That is exactly what Satan wants us to think. It is at this point that we must exercise perseverance. We keep wanting instant success, but holiness doesn’t come that way. Our sinful habits are not broken overnight. Follow-through is required to make any change in our lives, and follow-through requires perseverance.