"As one of the 50 Best Careers of 2011, this should have strong growth over the next decade.... While some counselors focus on the behavior of an individual, marriage and family therapists go a step further, addressing mental-health issues within the context of the family. By counseling couples, families, or individuals, marriage and family therapists tackle a host of problems: adult schizophrenia, substance abuse, anorexia, and marital conflict. Today, marriage and family therapy is considered a "core" mental-health profession, alongside social work, psychiatric nursing, psychology, and psychiatry. More than 1.8 million people are now receiving treatment from a marriage and family therapist."
[Read the full article here for more info on the field, pros/cons, average incomes (be sure to read the comments for some info on higher incomes, too), etc.