It may seem that applying to law school is all a numbers game spun around GPA and LSAT scores, but in actuality, law schools are looking for individuals who are dedicated, hard-working, and show a commitment to a career in law.
Use your personal essay to explain your background, personal experiences, volunteer activities, and achievements. Relate why you're interested in pursuing a Juris Doctor degree in the first place. Were you inspired by a week of jury duty or have you been fascinated since seventh grade with the precedents set by "Gibbons vs. Ogden?" Whatever your story, tell it in a way that reflects your passion and presents why you will be an asset to the school's program and to the profession. Sell yourself. Your personality should shine in a way that sets you apart from the rest of the pack. The essay also represents a chance to showcase your writing skills.
Most first-year law school classes are reasonably small -- between 200 and 400 students -- so admissions counselors want interesting and likable students who can work well with the rest of the class. You'll be spending a lot of time with your fellow classmates over the next few years, so you'll appreciate having a sense of camaraderie and shared objectives.
In addition to a personal essay, some schools ask for letters of recommendation. Be sure to choose someone who knows you well and who genuinely believes in your capabilities; their sincerity and tone will speak much louder than words from a distant connection you barely know, even if it she happens to be U.S. Supreme Court Justice Ruth Bader Ginsburg.