The feeling of faith (the authentic experience of it in consciousness, not the mental construct), arises slowly through the healing of trust wounds. It takes a lot of time and a lot of work, but it can be cultivated.
At first, it feels like a miraculous mystical condition, an incredible gift that you want to hold on to forever. But for the practicing mystic, there is a very real mechanical process associated with it. The more the process is performed, the purer the consciousness becomes, the more permanent and sustainable the feeling.
There is a returning quality to it; one returns to faith, so to speak, because it is a return of consciousness to a pre-wounded condition. It’s not a denial nor a naivete, but a repairing and removing of a barrier, which prevents the experience of faith. It is only accomplished through healing.
If a person is full of wounding, unhealed betrayals, unprocessed heart-aches, etc., and is fearful of trusting, this will stand as a barrier to the feeling sense of faith.
Then, absent the authentic feelings, mental constructs can be created and emotions can be generated with the mind temporarily, if one “believes” hard enough or keeps dogmatically repeating to himself how much he “believes” or “ought to believe.” This is what most religions teach lay people. But quickly that kind of faith breaks down, as it’s a very fragile sort of house of cards. The mind undermines itself in these matters often, and doubt prevails. Underneath that mental construct, full of trust wounds, the pain and fear and skepticism remain. No amount of belief can change that. This is why the real inner work is necessary.
Genuine faith is the serene and effortless surrender to the Divine will. It is neither blind nor ignorant. It is not attained through affirmative prayer, nor by the rejection of reason. In reality, it is a courageous path of negation; a purgative process requiring the arduous grappling with fundamental doubt and fear, and a healing of all the betrayals that caused the loss of faith in the first place. The more trauma one carries in the sphere of trust, the more difficult the journey.