Probably, you are hoping that this can be done in such a way that your new, chosen, Romantic Christian-type assumptions will become automatic, habitual, pervasive...
The bad news is that what you want is not possible; the good news is that the impossibility is part of the divine plan...
Romantic Christian assumptions must (to make a sweeping generalization) be consciously-chosen and will therefore happen in thinking. (Because thinking is the mode of conscious choice.)
We usually, spontaneously, want our lives to be 'effortlessly good' - including effortlessly purposive, meaningful, deep and rich.
But then, when we are learning something, some skill or practice (for me that was various types of academic work at school - then medicine, biology, systems theory, Christian theology...) we want that learning process to be effortless.
Yet we soon learn that learning is only learning if it is effortful - if 'learning' is not hard work, sustained and focused; then there is no learning (but, at most, only parroting).
(No insult to parrots is intended by this expression...)
We do not want to make mistakes - to err. But all that means in practice is that we deny our errors and double-down on them - and/or we curtail our ambition to much less than it should be, in our desire to avoid mistakes.
Thus the 'imaginative living' of successful Romantic Christianity has characteristics of deliberate-day-dreaming - in that (because it is a kind of thinking) we know we are doing it, while we are doing it.
'Magic' is thus contained within thinking.
It is therefore necessary to value conscious thinking - and to repent our spontaneous desire to be overwhelmed by 'romanticism breaking-in upon us such that we are passive and helpless to resist.
We need to acknowledge that thinking is (or can be) real, and value our consciously-chosen thinking more than the unconscious and spontaneous.
Then we may be able to intensify that imaginative thinking - so it becomes more satisfying and dominant within our lives.
Yet, this mortal life is one of learning from experiences; and we should not expect to make cumulative-progress in our life project. We should not expect the desired mode of thinking to become habitual and spontaneous - but always to require conscious choice.
After all we Will die, sooner or later - and before then, probably lose our higher faculties to disease, degeneration or just irresistible distractions.
Yet - on a timescale of eternal Heavenly life - that does not invalidate what learning we do achieve; nor does it invalidate those (perhaps brief) times when our thinking is as it should be.
It is in overcoming difficulties, and despite them attaining (for a while) - and in thinking - the desired mode of being; that we live in accordance with divine creation.
In short - we can attain Heaven on Earth in our thinking - but we are not supposed to reach that state automatically.
Our mortal 'job' is consciously to choose salvation - and keep on choosing.
