The life of faith will bring forth many such struggles, and this is unavoidable. But God wants us to have peace, even in the midst of struggle. "Peace I leave with you; my peace I give to you; not as the world gives do I give to you" (John 14:27). His peace is meant to be an abiding peace; not a peace "as the world gives" that is taken away as soon as conflict emerges. We are meant to have peace, even in the midst of the "wrestling" that is inherent in faith. What kind of peace would Christ offer if we were thrown into turmoil every time we encountered something we couldn't reconcile? Clearly, our Lord means for the peace of our faith to be maintained even in the midst of uncertainty. But how can we accomplish this?
To do this, remember that you do not need to resolve your difficulties in order to maintain faith.
Let's recall a bit about the nature of faith: it is trusting, provisional, and imperfect.
What does this mean concretely?
Now, I can foresee some critiquing this concept by saying that I am suggesting we just believe blindly even though our mind can no longer assent; that I am telling people to just stuff their difficulties and proclaim CREDO! despite their faltering heart. This is not so. Faith is fundamentally an act of trust, and if that trust has been so compromised as to become unsustainable, then faith is impossible, and it would be wrong and cruel to tell someone to simply ignore it. I am, however, suggesting that those of us who have faith give up thinking that we need to cross every jot and tittle; let go of the idea that being a strong believer means working out all the answers intellectually. Learn to rest in not knowing. You will not be denied heaven because you did not have a fully worked out intellectual synthesis of some disputed issue. If you find yourself in those moments of "wrestling," acknowledge the struggle, embrace it, and offer your ignorance to God.
"All I have written is like straw," said Aquinas, after experiencing a vision of the Divine. No matter how brilliant we are, how much we think we know, or how hard we work to educate ourselves, we are all "seeing in a mirror dimly", as St. Paul says. The dimness may be frustrating at times, but it is part of faith. An essential part. We should learn to take comfort in that and embrace the tension. At least I have.