I would also recommend taking a look at this book. Honestly, all personal statements are boring and cliche. They follow a similar pattern and use similar styles. Your goal is not to revolutionize the personal statement, your goal is to write one that is at least comparable to most.
Look through both books and try to mimic the things they do. The PS is about why you cant to pursue a career in medicine. Your journey, your story, the decisions and actions you've made that led you to choose this path.