Mental health is the true concern of psychology. But how can one's health be judged? If a person does not have any mental illnesses, but is still not happy, should he/she see a psychologist? And what technique should be used for treatment? The answer is positive psychology, a recent psychological approach, with an emphasis on happiness and self contentment. While traditional psychology focuses on mental illness and unhappiness, positive psychology focuses on how common people can become happier and more content.