Be authentic. As a former application reader for UC San Diego, I can tell you firsthand how important it is to write in your authentic voice. In other words, a personal statement is NOT a formal letter, literary analysis, or research report. It is about YOU, so be certain to write in the first person.
Also, don't incorporate information that is available on your application, resume, or cv. Your personal statement should NOT be a reiteration of your accomplishments. Use the space to convey something about yourself that is not available or apparent elsewhere.
Lastly, it's not a memoir. Focus your thinking to an event, period of time, or experience that has brought you to where you are today.
Good luck!
Anita W.
18d