We can't fight imperfections if we don't know what they are

The task of purifying the soul cannot, may not, end as long as we live; however, our imperfections should not make us anxious, for perfection consists in fighting against them, and we cannot fight them unless we see them, or overcome them if we do not face up to them.

Victory does not lie in being unconscious of them, it lies in not consenting to them, and we are not consenting to them as long as they displease us.

In fact, to learn humility, we must sometimes be wounded in this spiritual warfare, but we will never be defeated unless we lose courage or our life, and as our spiritual life is lost only by mortal sin and never by imperfection or venial sins, we have only to look to our courage, praying with David that God may rescue us from the fears that daunt us and from the storm around us. (Cf. Ps. 54.9)

Luckily, in this kind of battle, we shall always be victorious as long as we are prepared to fight.

St. Francis de Sales, Introduction to the Devout Life

I've begun rereading  Introduction to the Devout Life, slowly — fortunately it comes in small doses and is perfect for that. Here's a bit that grabbed me.