Hypnotherapy is the use of hypnosis — a state of focused attention combined with deep relaxation — within a therapeutic conversation. In that settled state, a person is generally more receptive to considering ideas, imagining alternatives and noticing responses that usually run too quickly to be examined.
It is worth being precise about the state itself, because the popular image of it is largely inaccurate. Most people describe hypnosis as similar to everyday experiences they already know well: being absorbed in a film to the point of forgetting the room, driving a familiar route and arriving without recalling the journey, or the drifting few minutes before sleep. Attention narrows, the body settles, and the usual busy commentary of the mind quietens somewhat.
Within that state, a hypnotherapist may use therapeutic suggestion, guided imagery and structured questions to explore how a behaviour operates and what a different response might look and feel like. The person remains an active participant throughout — considering, accepting, adjusting or rejecting what is offered.
Crucially, hypnotherapy is a therapeutic conversation that happens to use a particular state. The state is not the treatment; the work done within it is.