Would the conscious manifestation of subconscious belief changes be the increasing experience of doubt, and perhaps even the tenuous emergence of guilt feelings? Is sudden or even creeping doubt the erosion of conscious belief on account of the supporting unconscious beliefs changing? What can Creator tell us?

What you are touching on here, in a kind of general way, is much more complicated than your question presumes. There are many more emotions involved with the kinds of interactions leading to doubt, and then things like guilt. But what you are asking about will illustrate the general principles involved here, that the mind frequently finds itself in conflict not only between different levels of the mind but even within the same level of the mind there can be competing beliefs held. And, depending on which belief is connected to first, a competing belief will be felt as discomfort and a kind of interior disarray, and the sense of disquiet it causes, may well trigger repercussions such as increased anxiety, fear, or guilt, depending on the makeup of a person, their particular vulnerabilities, and where and when something is taking place to trigger things connected to inner limitations and unresolved trauma memories. If in a person's makeup there is a long history of personal failures or aggressive behaviors that come to be regretted later, when similar patterns start to play out, they may quickly connect with and recruit old memories of struggling with the aftermath from times when the person has been out of control or made poor choices that got them into trouble. And so, there will be soul‑searching and recrimination in some individuals, and frequently just simply self‑blame and guilt thrown in for good measure if they have been subjected to shame and humiliation in front of others. The key thing we would say about the kind of dynamic you ask about is that it is possible for the divine to trace out the history and pathways connecting inner beliefs with their origins, and that will often be traumas from old wounds that have never healed. So when these kind of dynamics lead to inner discomfort and rise to a level of negativity making a person truly unhappy, it can become a life-limiting dilemma that distracts a person, reduces their efficiency and effectiveness and, if the consequences are too visible and obvious to others, their unpleasant nature will be a disincentive to engage. So people who struggle too greatly and too visibly, typically become isolated and often friendless, living lives of limitation and loneliness. That is a very high price to pay for having picked up what is, in effect, a series of bad habits—habits because they are part of the hardwiring, as negative beliefs, and that makes them a permanent fixture and an ongoing liability that can mount over time. This, again, illustrates the great promise of being able to do effective negative belief replacement, through the divine realm, because that can save people from becoming something they do not like, do not want, but cannot help because it happens by default as a consequence of circumstances that arise.