The most usual method is medication. But I have also seen an HSP halt the same spiral by taking a vacation to a new place in the warm tropics, forgetting problems for a while. Upon returning, the person took up the old issues with a fresh perspective and physiology. In another case, instead of taking a trip, this person had to come home from a vacation to stop a spiral of anxiety. What was needed was less stimulation. Your intuition can be a fine guide for knowing exactly what you need to do physically to change your mental chemistry.
