If every other sentence of your letter begins with "Why?" you need to change the focus. Research the employer and find out what types of problems managers there are facing, qualities they look for in employees and their future goals. Then use your letter to prove that you are the answer to their problems. The most compelling letters demonstrate what you can do for the employer, not what the employer can do for you.

SOURCE: Cover Letter Etiquette
              by Kim Isaacs
              Monster Resume Expert