“But while the proportion of people trying to cheat the system may have stayed the same, the number of schools keen to avoid being hoodwinked has increased. Where Smeal was the first to use Turnitin to sift through admissions essays, now there are around 40 big business schools making use of anti-cheating software. This is good in itself. But it may also make economic sense. Investigating academic fraud once classes are underway can be difficult and expensive. Ms Marcinkevage estimates that, by rooting out potential cheats before it gets that far, the anti-plagiarism software has paid for itself. And most importantly of all, it allows harried admissions staff to concentrate on students' essays, rather than fear their work is falsified.”
So, yes. Write your own essays and beware of anyone who gives you completely set phrases and entire paragraphs to insert. Be yourself. Represent yourself. If you need help, get it from someone who will assist you, not do the writing for you.