The document outlines 10 common mistakes that applicants make when writing MBA application essays. These mistakes include: 1) trying to include too many achievements or events without providing clear context or details, 2) focusing on operational details rather than strategy, 3) using unnecessarily long or complicated sentences, 4) failing to highlight results or impacts, 5) not quantifying benefits or results, 6) omitting key lessons learned, and 7) using jargon or abbreviations without explanation. The document also notes mistakes like 8) lacking clarity about post-MBA goals, 9) not connecting current experience to future goals, and 10) not explaining why a particular business school is relevant to one's career plans.