Psychotherapy Psychotherapy is a treatment used to diagnose those who are facing psychological issues, such as depression or anxiety. It is common to those people, who sometimes feel 'blue' or 'a little worried,' occasionally these feelings increase, last for a long period of time. Types of Psychotherapy There are three main types of psychotherapy: Insight, behavioral, and biomedical. Insight therapies work on helping the person to gain knowledge into their disorder. Behavioral therapy works to change behaviors that are not helping. The purpose here is to learn how to change the bad behaviors into good or positive ones. The last therapy is biomedical. This form of therapy is conducted by a psychiatrist, who specializes in psychological disorders, or other medical professionals. The most common form of this therapy is through medication, such as Prozac or Wellbutrin that are used to treat depression. Once the doctor has diagnosed the patient, he will prescribe medication that can treat the biological issues that may be causing the psychological issue.