Though the path is plain and smooth for people of goodwill, those who walk it will not travel far, and will do so only with difficulty if they do not have good feet, courage, and tenacity of spirit. (Sayings of Light and Love, 3)
A plain and smooth path still needs the effort, “fired with love’s urgent longings” and the determination to never give up but to stay on the course until reaching one’s purpose which, in the spiritual life, is holiness. This path to holiness requires some self denial and conquering of the appetites. St. John of the Cross guides us in conquering the appetites by pointing out that an intense love of God in needed which will give the courage and constancy to practice self denial.
The saint tells us that whenever some joy in some vain pleasure takes hold of the heart, one will need to have “good feet” and try to remove it at the very beginning and to take courage! With courageous effort uproot the attachment while it is small and at the beginning for it will be much harder to do later when it has become deeply rooted. (Ascent Bk III, 20:1) When one loses courage, St. John says, “ they return to their search for worldly consolations”. (Dark Night Bk 1, 14.5) However St. Paul says we are to be “rooted and grounded in love” so that we may have the “strength to comprehend” and “to know the love of Christ that surpasses knowledge” and “be filled with all the fullness of God” (Eph 3:18-19) Courage and strength go together, and strength is found in spiritual reading and in prayer.
However, when courage is “fired with love’s urgent longings” it will not prevent the soul from seeking Him. These urgent longings of love are strong and vehement, so strong that this courage makes “everything seem possible” (Dark Night Bk 2, 13.7) when seeking Him. This courage and strength can move one to suffer for His sake, but only if “vainglory, presumption and the practice of condemning others” (Dark Night Bk 2, 19.3&4) is removed.
In order to seek Him, the soul needs to be courageous and also persevere against the world, the devil and the flesh – all of which prevent one from staying on the path to God. Tenacity of spirit is fueled by a “living hope in God” which gives the courage to elevate one to eternal things. (Dark Night Bk 2, 21.6)