Final answer:
Counseling Psychology is the area of psychology historically known for assisting the "worried well" with problems of living and adjustment issues.
Step-by-step explanation:
Historically, professionals in the area of psychology that assist the "worried well" with problems of living, adjustment issues, and phase of life issues are most aligned with Counseling Psychology. This is the area of psychology that focuses on improving emotional, social, vocational, and other aspects of the lives of psychologically healthy individuals. Unlike Clinical Psychology, which focuses on the diagnosis and treatment of psychological disorders, Counseling Psychology centers on facilitating personal and interpersonal functioning across the lifespan.