When you write anything, especially personal statement, you may need to take time to step away for a day or two, then come back to it... I actually restarted way too many times before I reached the final one. I think once I had my final concept it was close to 2 and a half weeks before I stopped editing. But then, I decided that I need a professional approach to the whole thing. I placed my essay on Essay Edge and hired their experts. I'm glad I did that.