While it has been thoroughly discussed before, it has of course recently arisen again- a suggestion to believe in Christ and just keep seeking, asking, believing that a personal proof and maybe even a revelation will present itself. As it turns out, that is probably true.
Page 194 of Bart Ehrman's HOW JESUS BECAME GOD explains it well:
...the ability to distinguish between self-generated events (that is, imaginary sensations originating in the mind) and externally generated ones (that is, those induced by causes exterior to the mind) is a real skill that humans acquire, and like all skills, it is likely to fail under certain circumstances. This skill is called source monitoring-since it is the skill of monitoring where the source of a sensation comes from, either inside or outside the mind. ....source monitoring judgments are affected by the culture in which a person grows up....Someone who is under considerable stress, or experiencing deep grief, trauma, or personal anguish (or religious awe and expectation as mentioned in a further paragraph) is more likely to experience a failure of source monitoring.
Ehrman is discussing visions of Jesus among early followers. But it could be easily applied like this: You see a dog and hear it barking. You know that the source is external to your brain- an actual dog is actually barking. You think of that time you were attacked by a dog and you hear the growling and feel the pain of flesh tearing at your leg. You know the source of that sound and pain is internal. It is just a memory turned into a concern. But if your source monitoring skill fails you while you panic at the sight of a similar dog, you may later be sure you were attacked again.
Keep asking, keep seeking-especially without doubt-and you will be in a time of grief, bereavement, stress, and certainly religious awe and expectations. Your source monitoring is likely to fail, giving you a revelation or vision or voice or just a comforting feeling that was internal but misread as external.