Michael, that's cleared up the confusion wanderfully. Thankyou for such a comprehensive answer.
My other query for now is more to do with the practice. Maybe it's like "how long is a piece of string", (or a "cart without the horse" question, if you remember the example Roger Elliott quotes in lesson 1) so there mayn't be a definite answer except Wait and See.
Practising on myself. As suggested, I tried making my own, slightly edited, version of the audio script from lesson 2. When I record and then listen to that, even though it's only by me on my modest equipment, I'm surprised to discover how it seems to work. After ten or fifteen minutes I've drifted off somehow "miles away", and though I think I've been listening to it, I can't positively recall having heard large chunks of what I know must have been playing back only a few moments before.
But "how I feel", is a very subjective judgement. So the question is: Is there any better way to know if the hypnosis is really working as intended? And to judge how well (or otherwise) I'm doing or responding?
For example, how do I know that I'm not just dropping off to sleep? I don't really need lots of practice, if that's all I'm managing to achieve, because I'm quite good enough at that already
I realise this isn't a controlled situation, and I'm not looking for anything precise. But would it be helpful at some stage to have some sort of indication, - especially if it did turn out to suggest that something might be happening correctly. Is that possible at this early stage, is there something simple, - better than my unaided guesswork - to get any idea at all of the effectiveness or otherwise of what I'm doing?
Or should I just accept that if the result seems plausible, it will probably do for now. And wait until I've learnt enough to eventually join my particular cart and horse together, so to speak, and then see what (if anything) happens?
As before, grateful for any help you may be able to offer.