If you have a hard time getting started, try freewriting. Set a timer for five, ten, or fifteen minutes then start writing about your study skills and work ethic, saying the things you would like your teacher or those who will receive the recommendation to know about you. Don't worry about grammar or punctuation and, no matter what you do, don't stop writing until the time is up. If you get stuck, just write "I'm stuck, I'm stuck" or "I don't know what to say" or "What should I say?" over and over until another idea comes to you. Then, when the time is up, look over what you've written and pull out the good ideas to use in your essay.
Simone, EssayForum.com