Highly sensitive people (HSPs), who make up some 20 percent of the population, are individuals who both enjoy and suffer from a finely tuned neurological system. This condition can be a gift, but, until HSPs master their sensitive nervous systems, they operate in a constant state of overstimulation. Conditions that most of us ignore completely overwhelm the HSP: bright light, loud sounds, and strong smells. More importantly, HSPs are also very sensitive to their internal worlds. They tend to be deeply affected by pain, both emotional and physical. The emotional demands of relationships and...