The Highly Sensitive: Growing in Self-awareness, Managing Emotional Overload and Stress, and Using the HSP’s Unique Characteristics to Live a Happy, Meaningful, and Fulfilling LifeBeing a highly sensitive person is not a mental illness. It is not a psychological condition or disorder. Because of his high sensitivity, a highly sensitive person simply finds it difficult to filter out or sift through stimuli. Only about 20% of the general population has sensory processing sensitivity. Given t...