I have been thinking a lot lately about whether the human mind is best described a unified 'thing' which has changing characteristics, or as a bunch of transient processes which for convenience we consider as a unified and persisting entity. My instinct is that we don't have any permanent real existence, and that our existence is not firmly divided from processes both bigger and smaller than the personal level. My feeling is that a mind only has unified existence in the way a hurricane does - for convenience we give it a name and track it, but really it is part of a continuum of weather which merges with global systems, and arises from micro-level processes.
This links to hypnotherapy because I think we (and I include myself in this) can cling to bad habits, phobias, destructive behaviour, as a way of giving ourselves a spurious feeling of continuity and validity over time. I am the woman who is scared of flying (or the man who drinks, or the woman who can't go outdoors). If I stop being that, what will I be? I think this element of clinging is behind a lot of destructive habits and addictions.