COVER LETTER: A cover letter is an introduction to your future employer. it is accomplished by your resume. what will you talk about in the letter to introduce yourself?

In my cover letter to my future employer i will discuss my personality and how well i work with and around other people.  I also will inform my employer that I always have a positive attitude about work and I'm a fast learner as well.  I will be ready to have any position whether its hard or easy. I will state what I am more experienced at and what i am not. Lastly, I will state my achievements and awards.