The truth is that modern life is extremely stressful; there are many demands on your time. However, being at the end of your tether, worn out and overwhelmed is not the same as having a mental disorder. In fact, mental health covers a wide range of illnesses including those which most people are aware of, such as Schizophrenia (which is classed as a psychotic disorder). What you may not be aware of is the number of people who have personality disorders and the reasons for these disorders. Most people are not diagnosed until into their twenties and symptoms will naturally reduce in later life.