Writing a graduate school personal statement can be a daunting and difficult task. In a graduate school personal statement you are selling yourself and trying to let the admissions representatives know WHY you should be chosen over other qualified applicants. This can be even more daunting when you realize that between two to five people at the School will be reviewing your statement _ YOURS needs to stand out from the crowd while also addressing the criteria and questions the school has outlined.
As mentioned, this part of your application can be used to decide whether a school wants to invite you for an interview or not. Schools only accept students who have been invited for interviews, so getting to this step is a huge part of the process.