A good, concise cover letter can make all the difference in your job search. A well-written cover letter may not get you a job, but it may be the one thing that convinces a hiring manger to call you in for an interview. Keep the letter brief to one page with no more than four tightly constructed paragraphs. Always proofread the letter and have someone else read it before you send it to your dream employer.

The cover letter is a business letter. Make it formal and address it to a specific person. The first paragraph names the position for which you are applying. Mention how you heard about the opening, especially if an employee or someone known to the hiring manager referred you.

Write a second paragraph that gives a brief summary of your career and your qualifications for the job. You may name specific degrees and the specific line of work that you're in.

The third paragraph explains why you are right for the job. Describe certain career accomplishments and skills that show how you would be an asset to the company. Name specific career highlights and achievements that are related to the company's work and the position for which you're vying.

The final paragraph is your call for action. Tell the hiring manager that you want to arrange an interview so that you can further discuss your qualifications for the job. You may even give the hiring manager a day on which you plan to call. If you do name a date, follow through and give him a call. Provide your contact information such as your phone number and email address.

Sign off professionally. Finish the letter with "Sincerely," skip a few spaces and sign your full name.