If I heard you telling me that one person could make 300 revisions to a resume when I got out of the Army, I would have thought you were insane. However, I have literally just made the 300th revision to my resume, starting with using a junior military officer recruiter, through working as a consultant, and then through applying to a dozen business schools.
After all this work, it still isn’t perfect and I don’t think it will ever become perfect. Some things I left out as a consultant, I put in for business school, some things I put in my business school resume, I took out now. The resume is the quintessential living document.