Dr. Breeding, Ph.D. psychologist discusses the concept of normal. Mental health is defined in terms of normal by psychology and psychiatry. If you don't fit into the box, you might be labeled with mental illness. If you too happy you are manic. If you not happy enough you are depressed. If you concentrate too much you are compulsive. If you don't concentrate enough you have ADHD. If you think about sex too much you hypersexual. If you think about sex too little you hyposexual.