I agree with the assertion that the personal statement should be loaded with personal standout qualities. Mine came out to about 4900 characters after I cropped some sections that became cumbersome, but I was trying my best to use as many of the 5300 characters as I could. I figure we all want to be doctors and have great reasons, so I shouldn't spend so much time talking about why and how I got to this point but what is it about me that got me here. I've been reading on a lot of these threads that interviewers often read straight from the personal statement, so it's a great way to set up a conversation at interviews. Bring up interesting things you've experienced that make you exceptional: there have to be many or you wouldn't have made it this far! I sent my personal statement to a girl that got into more medical schools than I can count on two hands and her boyfriend that's been on the Stanford admittance committee for years now and they both gave positive feedback, so I think that's at least one viable way to approach this.
I hated writing this crap. First of all, my ego keeps me from thinking I can be summed up in 5300 characters or less on a single piece of paper. Secondly, I got caught up by all of the confounded stipulations that were proposed by our pre-med committee (at Illinois Wesleyan U.); "it's a personal statement, but don't use 'I' too much", "be modest, but don't be too modest." What kind of personal statement doesn't have the word "I" in it a lot? Oy. I felt good about finally getting it done, but what a pain in the butt. Good luck!