There is a book title “The One Thing” that mentions about focusing on doing one thing which will get you the big results.
I find that it is true. We can put this principle into hypnosis context.
When we identify an issue or problem that we need to resolve such as unable to sleep, we look for a hypnotherapist and undergo a few hypnosis sessions and see the sleep problem improves.
The issue or problem = Do the One Thing
Undergo 1st session of hypnosis = Take action
Turn up for subsequent sessions = Discipline required before you see the results
See the sleep problem improves = Get the results