When i did my personal statement, I found it really difficult to say what I meant because of the word limit.
My tutor helped me to siphon through what was really important - and what was just waffle!!
I think it's easy to get carried away when writing something like that, and it's quality not quantity that's important.
I found it very helpful to have another person's perspective, however they are only there to advise, they can't make u change things if u don't want to