The document provides 10 rules and 10 pitfalls to avoid when writing a personal statement for graduate school admissions. The top rules include narrowing your focus to 1-2 key themes or experiences, telling a story, and showing rather than just listing accomplishments. Major pitfalls to avoid are repeating information found elsewhere, complaining, preaching, discussing money or disadvantaged backgrounds unless truly relevant, and using clichéd or gimmicky introductions, conclusions, or formats. Advice is given to focus the statement, show not tell about yourself, and avoid common mistakes that could undermine your application.