I asked
LizzyM in a message what she thinks the most overused personal statement openers are and she responded:
"The most overdone seem to be: 1) lights and sirens screenplay type openings about an exciting medical experience on an ambulance,
2) witnessing an injury, illness or death and feeling helpless, 3) expressing that if a loved one had gotten better care, they would not have died,(or if they had been informed about risk they wouldn't have done dangerous things like smoke cigarettes), 4) a description of a personal injury (often a sports injury) inspiring one's decision to pursue medicine -- particularly with an interest in orthpaedics, 5) being attracted to medicine from infancy and never considering any other profession.
Also, starting with a quote from a book, movie, poem, etc is usually pretty cheesy."
If it speaks to your reasons for pursuing medicine and you can't think of any other way to start, maybe just use it. Otherwise, try something a little more creative?