It's not because at one point you managed to win a victory over your lower nature that you triumphed over her. It is precisely like a country that has led to repress an enemy: it has no confidence that this enemy will not renew its attacks. For a while the winner falls asleep on his laurels, the vanquished will seek revenge.
It is the same with your lower nature. Even if in a few circumstances you have managed to overcome some of its manifestations - evil thoughts, evil feelings - you will never be sure of having triumphed over it. At one time or another, she can rise again against you, and you're on the floor. But if you always stay in touch with your higher nature, instead of being a winner who is never definitively assured of victory, you have a dominant partner you can always count. And even if sometimes you are a little tired, he continues to keep the lower nature in check.
