Empty Words _ Since most personal statements are about 5μ lines, you don't have space for empty statements such as 'I am a hard worker' or 'I am a people person'. How can the hiring manager ascertain that this is the truth without any evidence to back up such lofty statements? You need to give them examples of your work ethic and how it positively impacted your employer as well as evidence of your interpersonal skills.
The Interview Starting Point _ The personal statement is also the starting point for many interview discussions and questions. When committee members sit down to interview an applicant, they often have just a few minutes to skim the application. Your personal statement/essay provides the perfect amount of information for them. They can pick out a few key points and use it as the starting ground for your interview. If this is the only part of the application that they may read, you need to make it perfect.