This document provides an overview of career counseling and theories of career development. It defines career counseling as a process to help people understand themselves and potential careers to make informed decisions. Two major theories discussed are Holland's Theory, which categorizes personalities into six types to match careers, and the Myers-Briggs Type Indicator, which assesses personalities across four dichotomies. The historical development of career counseling is also summarized, noting its emergence in the early 20th century to help guide career choices.