[She wouldn't be surprised if someone didn't know about it, but she'll explain.]

Psychologist are there to help with mental and social issues that affect one's daily life. Some people have a difficulty interacting with others on a normal basis and others have gone other so much trauma they need to seek psychological help. Some can even prescribed medicine to deal with any mental health issues. Depression, for example, is a very common health problem that psychologist can help people with.