Just as a strong personal statement can get you in, a poor personal statement/essay can quickly eliminate you from the mix. When a medical school committee has a few hundred applicants, seeing typos, spelling mistakes or bad content will quickly move you to the bottom of the pile. The personal statement is a quick way to "weed out" similar applicants. With two similar applications, the personal statement can decide who gets an interview and who does not.
Revising and proofreading _ Upon examining your essay and discovering a few unwanted elements or grammatical mistakes, it is now time to start revising it. First, search for grammatical mistakes and spelling errors. The prompts in most MS Windows programs help you identify these (green squiggles for grammatical mistakes and red squiggles for spelling errors). As long as they do not appear under proper names, it is safe to modify them. However, do not rely exclusively on your computer for spell checks. Go over each word on your own.