There is a myth that hypnotic suggestions only last a short time, or they will only last for 48 hours. I am amazed that there are still some hypnotists who believe this. I have heard other hypnotists say that you must get back to their office within 48 hours of your first hypnosis session, so that they can compound the suggestions before they wear off. Again, false.
Andrew Salter, in his book What is Hypnosis, quoted a piece by George Estabrooks recounting a suggestion given to soldiers during WWI that was still effective more than twenty years later. There are also examples of Milton Erickson giving suggestions that lasted more than ten years.
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