about post-hypnotic suggestions/programming
One of the things I experience as a distinct "mental action" in hypnosis is programming a response. "When X happens, I do Y." Often classified as a "post-hypnotic suggestion".
Hypnotists will often:
about post-hypnotic suggestions/programming
Repetition increases the odds of at least one attempt succeeding.
Practicing is a way of conditioning the response. I doubt trance directly helps with this, but it means the subject is less likely to be distracted. Also if it's something they think they need to be in trance to do, it removes a possible obstacle.
Committing the instruction is something I experience as a distinct "mental action". I think that's the interesting part.
about post-hypnotic suggestions/programming
For me, the process of committing goes like this:
about post-hypnotic suggestions/programming
(While writing this, I programmed myself to do something a little silly later, with no hypnosis or trance around it. Mostly to observe what I was doing. Will be interesting to see if it works.)