The devil cannot enter the soul that is in love with Christ.
The humble person believes that all things depend on Christ and that Christ gives His grace and in that way he makes progress. The person who possesses holy humility lives even now in the earthly uncreated Church. He always has the joy of Christ, even in the most displeasing circumstances.
You don’t become holy by fighting evil. Let evil be. Look towards Christ and that will save you. What makes a person saintly is love!