I too am having a bit of trouble starting my PS. My biggest EC has been research experiences which have driven me to have a real desire to continue research in my years in medical school, so I want to emphasize that, but I have a feeling that I should really emphasize my clinical experiences more than the research since that may appeal to the adcom better. However, nothing in my clinical experiences has been profoundly life changing making me say "thats exactly why I want to be a physician" which is often what I see in examples of "excellent" PS's, the clinical experiences have more or less kept me from being scared away, giving me some realistic insights into what a variety of different kinds of doctors do each day, interaction with patients who despite their respective illnesses are still very human and otherwise normal (other than Alzheimer pts. in the nursing home I volunteered at), and an exposure to the world of hospitals and other health care facilities that has made me more comfortable and less awkward in medical situations. Any thoughts into how I can at least outline my PS into something that won't appear sappy and unheartfelt?????
I always feel that when I write these kind of essays, it sounds forced and insincere, despite my true feelings.