More than one in four Americans suffer from a diagnosable psychiatric disorder at any given time, according to estimates from the National Institute of Mental Health (NIMH). Over our lifetime nearly one half of us suffer from such disorders. Unfortunately, nearly two thirds of our behavioral and emotional problems are never diagnosed or treated, even though in many cases effective treatment is available. More than 80 percent of people with major depression, for example, benefit substantially from a combination of medication and counseling.