I see my work as a push in a particular direction. If that momentum is kept up, the effect can be permanent.
What happens more often in practice: everyday life, with its familiar surroundings, people and patterns, pushes back the other way — and progress stalls or slips back a little. As a hypnotherapist, I can't change your environment or your daily life. That's on you — holding onto the effect is always a joint effort in the end.