Another way to mess this up is to ignore prompt instructions either for creative or careless reasons.
This can show admissions officers that you're either someone who simply blows off directions and instructions or someone who can't understand how to follow them.
The problem with the overly personal essay topic is that revealing something very private can show that you don’t really understand boundaries.
And knowing where appropriate boundaries are will be key for living on your own with a bunch of people not related to you.
Have you ever had a teacher mark comma splice on your paper?
Minimally Invasive Percutaneous Plate Osteosynthesis - Most Common Mistakes In Student Essays
Have you ever turned in your essay only to realize later that spell check “fixed” your word so that it reads defiantly when you meant to write definitely?
So if you start with a terrible topic, not only will you end up with a bad essay, but you risk ruining the good impression that the rest of your application makes.
Some bad topics show admissions officers that you don’t have a good sense of judgment or maturity, which is a problem since they are building a class of college students who have to be able to handle independent life on campus.
You're better off not airing your dirty laundry out in public. While it's great to have faith in your abilities, no one likes a relentless show-off.
No matter how magnificent your accomplishments, if you decide to focus your essay on them, it's better to describe a setback or a moment of doubt rather that simply praising yourself to the skies. In this case, you're trying to make yourself memorable to an admissions officer who has been reading thousands of other essays.