It goes without saying that education plays a very important role in our life. However, many people after finishing school do not enter university, but they start a career. There are some advantages and disadvantages of both choices.
good introduction :)
If a person starts his career early, he will become a qualified worker quicker.
... I guess he would become an experienced worker rather than a qualified worker. Qualifications usually refer to one's credentials. Experience or Exposure are the terms that are generally linked with work. :)
One positive aspect of starting a career at 18 is an opportunity for gaining experience. If a person starts his career early, he will become a qualified worker quicker. In addition during your work you earn money for a living and it gives a feeling of independence. However not everyone is an academically-gifted person or they got poor grades at school. The only thing to do for them is getting a job.
This is very good writing and a good para too.... However, you have not included any specific examples to support your reasoning. That is important to convince your reader.