I don't know about either one. I've read tons of suggestions for personal statements, and they highly recommend against writing about how you've wanted to be a lawyer since you were (insert young age here). After all, what kind of credibility or foresight does an eight year old have? Lol, writing a personal statement was a little tricky for me, but I would try to explain a little bit more about yourself, then tell why you want to practice law or why you would be an asset to the profession. It doesn't have to be one experience or time in your life. Build a big picture of yourself!
Just my opinion.