When I was young, my school teacher asked me who I wanted to be when I grew up. My answer was a scientist, as was many of my classmates'. I remember that I took on a sense of despise against those saying that they wanted to be businessmen, bakers, or lawyers.
This weird thought has been a part of the childhood memories among many of my peers. Now, few students expect to do scientific research in the future, which they think is tedious and minimally rewarding. Instead, they have a burning desire to be actors/actresses, singers, brokers, merchants, or other professions that promise high income and public recognition. As a consequence, a large proportion of college graduates, regardless of their majors and advantages, flood into the business or entertainment field every year.
Obviously, pursuing a career only for its potential financial benefit and public admiration is irrational and presents risks that will end up thwarting one's career development. Everyone has his/her own advantages and disadvantages: if he/she exerts himself/herself to seek a path inconsistent with his/her advantages, he/she is unlikely to achieve success in the end. In fact, it is not uncommon that some 30-year-olds return to what they are good at after struggling to do business or to act in films for a couple of years.
My opinion is that one should know himself/herself completely before starting to take a career, and the best approach to understanding one's advantages and disadvantages is through self-examination.