@SlowMo
Would it be possible to hypnotize someone so that they can get themselves to ctb peacefully and painlessly? i guess people would be thinking that if you can achieve that you should be able to hypnotize them so as to improve their lives such that they don't want to die anymore but that might not necessarily be true.
Forgive my late reply, I've been away from the site for a few days.
This is an interesting question actually and it raises a number of issues. The first is the concept of how far hypnosis can intrude on the autonomy of a person; could hypnosis be used to override the survival instinct? If you're talking about hypnosis in the strictest sense, then the answer is yes, and no... You could use hypnosis as a way to counsel a person and relieve a specific fear in relation to a suicidal act. For example, if what prevented a person from drinking a poisonous substance was fear of a specific side effect, you could relieve that fear, thus removing the barrier to them performing the act.
What you couldn't do is override the innate survival instinct in a physiological sense, you couldn't hypnotise somebody to stop breathing. I've spoken on here before about people making claims that hypnosis can be used to stop the heart or cause a peaceful death, their evidence being that certain subjects have anecdotally experienced near-death experiences during hypnosis and thus faultily assume they have been clinically dead for a period of time. I have induced near-death experiences in subjects using hypnosis; it's a flawed methodology to suggest this was in any way related to death.
Now, could you hypnotise somebody who has ingested a poisonous substance, for example, to not experience pain as they pass away? Yes, you can, but I don't know how practical it would be. Hypnosis for anaesthesia has been around for centuries and was actually common practice before medical anaesthesia drugs were available, it's still sometimes used today. With a reasonably responsive subject, you could indeed hypnotise them to not feel any pain or discomfort as the process of whatever drug or poison they had ingested took hold. Again, I'm not sure how practical it would be with other methods such as hanging, but to my knowledge, it's never been attempted, so it may or may not work, I don't have an answer to that.
But yes, brilliant question
@Lovequenel, in certain contexts, you could hypnotise somebody to allow them to experience a painless and peaceful death. To answer the latter half of your question, using hypnosis to remedy their desire to die very much depends on the issues that underpin that desire. You couldn't just hypnotise somebody to shut off the part of their brain that felt suicidal as suicidal feelings are far more complex in nature and origin, but hypnosis as an adjunct to other therapeutic techniques can be used to remedy some of the issues in people's lives that might underpin their feelings of suicide.
I hope that answers the question, if I missed anything then just drop me a tag and I'll try and clarify.