Here is something written about doubt from the wonderful nun Mother Maria who founded a monastery in Yorkshire, England. She is saying: do not be afraid of the doubt!
To prove God, to prove the Gospel, to prove the Resurrection, to prove the Saints, all this lies totally outside our power, even if the attempt is made by the process of negation.
The mystery can never yield to becoming a discovery. There can be no question of proof, or half-proof, positive or negative, equally there can be no fear or scorn of doubt. We need not attempt to ride triumphantly over doubt. pretending it is not there or exulting that we have pushed it away into some obscure corner.
The shame and the hatred of doubt rest entirely on pre-conceived premise of absolute and certain human know-ledge. Doubt and a sense of failure go together and lay the foundation for atheism or pious sham or years of spiritual work which possibly could have been used more fruitfully, although no suffering can be wasted.
If we did not doubt in our finite minds. Who would God be. where could we find Him? What a hell it would be of separation from God if there were not the room for doubt! The presence of the doubt is the one constant clue which we have to the presence of the Mystery. as it were the one shadow of the transcendent in immanent life.
When God comes to us, how He comes to us. and how He lives in us. is the Mystery shining within the doubt. It is the beloved secret and no man can know it. and it is the key to every expression of our faith. Not one aspect of our worship is free from this blessing of doubt.
All the forms in which our daily faith is expressed and practised can only be understood in the light of the Mystery shrouded in doubt: Jesus answered and said unto him, if man love me, he will keep my words: and my Father will love him. and we will come unto him, make our abode with him ( Jn 14,23).
And here is a photo of an old monk. He looks old and he looks wise. I don't even know his name but he is, I think, from Serbia. During his long life I can believe that he was hit by doubt many times but he would have clung to Christ and clung to his prayer life and found his own personal way to handle the doubt. We are all attacked by doubt from time to time. You can be pretty sure that there are people who ask this old monk how to light their tamjan and cense their houses; and others would be his spiritual children and ask him about the Jesus Prayer and Confession and how to live a spiritual life as a follower of Christ. The Church is a family for every type of person, from the beginner to the Saint.