Let me start off by saying that I don’t know and that I don’t have this field. I’m only chiming in at this point to offer ideas to the friends here who are asking “Why is this happening?” and I’m looking to the description (and what I understand about the human mind, my life experience and how I understand manifestation to work) to come up with the ideas that I’m sharing here, with the intention of helping them with their purchase as well as to get the experience that they’re wanting. With that said, let me answer your good questions!
There’s the rub. We don’t really know that, do we? (And I’ll get back to this in a moment.)
We can use my analogy to sort of answer your question. “How would my analogy turn the big tree into a bush?” Well, if you ram your car into that big tree hard enough and often enough, that’ll do it. IOW, I agree with you. When you do that sort of ramming, basically any obstacle will get smaller and smaller until it no longer exists. But I hope you agree with me that can be a really rough ride, isn’t it?
And the field’s description sort of talks about this:
Those are the main words from the description which really address the subconscious and belief issues we’ve been talking about here and those words really fit with the idea of forcefully (and, perhaps, repeatedly) ramming their “car” into a big tree. (And that’s only one big tree of that heavily-wooded forest of my analogy. Oy! You feelin’ me?)
The other words from the description about the subconscious are
The description is very consistent in its tone of “this field is sort of strong-arming you into your goal of having a million USD.” And that’s fine. That’s an approach. I’m not disputing that or even judging anyone who wants to take that approach. But I hope you’ll agree with me that there’s a potential for this strong-arm approach to create a sort of rough ride. Think an arm-wrestling match, where both sides struggle and strain to accomplish their respective goals. (And, again, I’m not even condemning arm-wrestling matches. 
)
I have to share with you that I, personally, don’t buy into the idea that any “soul” comes into this world to experience any kind of suffering throughout their entire life. It is my opinion (and you know what they say about opinions¹, don’t you?) a soul may decide to come into this life to experience poverty for some period of time for a variety of reasons, such as for birthing powerful desires of abundance, for demonstrating to themselves their profound worthiness, for the exhilaration of exercising their talents and skills to move towards what they now want, etc. It is also my opinion that we (both us in our physical bodies as well as our Higher Selves or souls or whatever “piece” of us you want to talk about) are always updating and amending the decisions that we made as we move through this life experience.
Now, I’m not telling you this to criticize your world view nor to try to convince you to my way of thinking. I’m just sharing this to let you know that we have a mismatch of premises for the next part of your discussion.
¹In my country, we have saying about opinions: “Opinions are like as*holes. Everyone has one, and most of them stink.” 