no second causes

I recently picked up a book I first read during college: Hinds' Feet on High Places by Hannah Hurnard, an allegory that recounts the story of a character named Much-Afraid. Hurnard's introduction grabbed my attention because of how her words connect with some of my current thoughts & circumstances:

"As Christians we know, in theory at least, that in the life of the child of God there are no second causes, that even the most unjust and cruel things, as well as all seemingly pointless and undeserved sufferings, have been permitted by God as a glorious opportunity for us to react to them in such a way that our Lord and Savior is able to produce in us, little by little, His own lovely character . . .

But the High Places of victory and union with Christ cannot be reached by any mental reckoning of self to be dead to sin, or by seeking to devise some way or discipline by which the will can be crucified. The only way is by learning to accept, day by day, the actual conditions and tests permitted by God, by a continually repeated laying down of our own will and acceptance of His as it is presented to us in the form of the people with whom we have to live and work, and in the things which happen to us. Every acceptance of His will becomes an altar of sacrifice, and every such surrender and abandonment of ourselves to His will is a means of furthering us on the way to the High Places to which He desires to bring every child of His while they are still living on this earth."