Only the will of God is indefectible. Every other freedom can fail and defeat itself by a false choice. All true freedom comes to us as a supernatural gift of God, as a participation in His own essential Freedom by the Love He infuses into our souls, uniting them with Him first in perfect consent, then in a transforming union of wills.
The other freedom, the so-called freedom of our nature, which is indifference with respect to good and evil choices, is nothing more than a capacity, a potentiality waiting to be fulfilled by the grace, the will and the supernatural love of God. — New Seeds, chapter 27