A young man sent many resumes to some advertising agencies to apply for a job, one of which wrote a letter to him: although you think you are very good in writing, we found many grammatical mistakes in your letter. there are even some typos.  The young man thought that if this was true, I should thank them for telling me and then correct it. So he wrote a thank-you letter to the company. A few days later, he received another letter from the company informing him that he had been hired.
passage mainly wants to tell us?
Good writing skills is a prerequisite for a successful job search.