The body of your personal statement is going to be hard work _ you need to use around 50% of your word limit to give the admission representatives concrete evidence of why you stand out from the crowd in this application process. The body is also where you will be answering questions and giving examples of experience and affects of experience. Answers and evidence need to keep reflecting who YOU really are. If you're struggling to keep under the word limit, allocate each question a word limit as well.
"The prospect of helping people has driven me to fulfil many goals in life and this is truly my dream. Although it is great to have ambitions _ I now want to translate my goals into reality. Becoming a nurse is a natural extension of my interest in medicine. Following graduation, I found myself advising investment bankers on the stock exchange, secretly desiring the opportunity of helping others overcome illness and promote health."