My 2 cents (take it, leave it, throw it away, stomp on it, treasure it - whatever floats your boat):
I don't agree with the journey premed & eureka! premed as I understood them (Journey Premeds never dreamed of becoming a doctor, but explored the field; Eureka! Premeds are those that had a precious awesome moment).
I decided in about 4th grade that I wanted to be a doctor. That dream never died until Junior year of college. Then, filled with doubt, I backed off of the dream, declaring myself "unsure" and took time off. I then explored more seriously than I had before, reassured my desire & headed back to make my dream happen. No real moment, which would suggest that I'm a journey, but I have always dreamed of being a dr.
In any case, I, too, felt like, "What do I have to talk about?" when writing the PS. No moment, no dramatic experiences (yes, shadowing/volunteering, but locally - not abroad, etc.). I was trying to make mine have some great style or catchiness. I then decided what I was doing was bull.
I went back to the drawing board. I thought about what draws me to medicine, what experiences I've had that make me feel like I will find what I need & want in this career. I wrote a very honest personal statement about "Why medicine?" - yes, a few 1-sentence anectdotes from my experiences to show that I had some, but otherwise maybe a very "plain" statement. In the end, I really liked what I wrote because it was so honest & straightforward. I didn't feel like my PS was trying to impress someone, blow their socks off - it was a "here's what I want to do & why" statement, hopefully filled with my spirit, soul, personality.....
Anyways, I did not have anyone comment on my PS (+ or -) when interviewing. Maybe my PS wasn't wowzy enough to get me interviews just on its own, but it certainly didn't hold me back.