Hi Calicles
That sounds wonderful... there are techniques of develop similar yet more perseverant states, though I'm not sure it's "techniques" as such you are asking for, and most of the ones I know of (such as the mythogenic self) involve having another individual involved as a facilitator.
NLP, as the study of subjective experience, gives us tools to model such experiences and to develop ways of eliciting them. I have an abiding interest in the application of NLP to spiritual development and would love to have the opportunity to ask you some questions (along modeling principles) about this experience if you would be willing. And hey, you might discover something useful about it for yourself in the process
