The means must be commensurate with the end - the method must suit the goal.
This is a necessity, but also (from the usual 'pragmatic' perspective) it is a difficulty; a serious constraint. It means that there is no indirect method of achieving what needs to be achieved - we need to confront it head-on. Since full (divine) consciousness is aimed-at - the process cannot be unconscious, manipulated, involunary.
So; this implies that if it is desired to convert people to Romantic Christianity, the means and methods must be both Romantic and Christian - not something partial, not attained by covert, indirect or incremental ways. What needs to be presented and chosen is the-whole-thing, in microcosm.
In sum, a person needs to understand and agree-to, apprehend and embrace, The Package of Romantic Christianity - consciously.
Why would anybody do this? Simply because it is True and they Want it. Also, negatively, such a convert may be prepared because he has exhausted all other possibilities, has realised that Nothing Else Works (or ever will work).
Therefore we need to condense and concentrate:
1. That God is our loving parent/s, and creator of this reality - and wants us to be raised to become fully-divine; full members of the divine family and co-creators.
2. This created reality consists of beings, not things; they/we are bound by inter-personal love, not abstract forces.
3. All the above is directly-knowable by each person, for himself - by personal experience; because of 1. and 2.
What is the aim? Life with purpose; life with meanings (because all is beings, and the loving relations between them); life as developmental (evolutionary, creative); life as hope-full - because eternal, loving, creative and chosen.