In “How To Live a Lie,” William Irwin considers whether you can live as if there are moral truths, as if God exists, and as if you have free will even if you believe none of these things is true. His conclusion? Morality and God, no … but free will, yes. “Well, I cannot believe in free will, but I can accept it. In fact, if free will fictionalism is involuntary, I have no choice but to accept free will. That makes accepting free will easy and undeniably sincere. Accepting the reality of God or morality, on the other hand, are tougher tasks, and potentially disingenuous.”
Socratically Speaking 
Disbelieving something but pretending to believe it is perhaps not the same as disbelieving from one part of your mind and believing from another part of your mind.
It is a question of your love of truth and your honesty to yourself. I think that it is a vitally important question which few realize and it’s implications are profound.