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.
One of the most important parts of a college application is the personal statement, a one_ to two_ paragraph description of anything relating to you and your application. Sometimes, personal statements are optional; other times, they take the place of essays. Regardless of whether they're required or not, you should always take advantage of the opportunity to construct a well thought_out description of why you'd make a great addition to the incoming class.