Individuals can use self-hypnosis to maintain a trance for longer periods or to re-enter a hypnotic state when desired.
Individuals under the influence of strong substances might have difficulty being hypnotized or realizing hypnosis benefits.
Your willingness to engage with the process and practice self-hypnosis or "homework" given by the therapist can significantly influence the speed of results.
Simpler behavioral issues may show results in 3-6 sessions, while deep-rooted or complex problems might need more than 12 sessions.