It has something to do with the type of personality traits that we show. When I was four, I wanted to be an architect. I didn't exactly know what an architect was but the name somehow appealed to me. Later, for at least a week, I wanted to be a detective.
Intellectual people enjoy dealing with abstract concepts.
Typically, they might be drawn to careers in academia or research. Artistic people are imaginative, intuitive and creative, and are obviously suited to careers in the arts and design industries. Social people are gregarious and tend to opt for careers in areas such as sales, corporate training or public relations. Conventional people like implementing rules and procedures and often make good administrators or law enforcement officers. Enterprising people, who tend to be natural risk-takers, like scope to innovate and are often attracted to careers in marketing or politics.