I struggled with writing when I first started trying to articulate my work in captions and artist statements, so I get the appeal of having something polish your thoughts. But here's what I'd actually caution you on: universities care deeply about authenticity in application essays because they're trying to get to know *you*, not a smoothed-over version of you filtered through an AI. Most schools now have honor codes that explicitly flag AI-generated content as a violation, and they're getting better at detecting it. The writing patterns are often pretty recognizable - that particular blend of formal clarity, slightly generic phrasing, and absence of real voice that AI produces. It's risky.
Beyond the detection issue, though, the real problem is that using ChatGPT for more than light editing crosses into misrepresentation. If the essay reads like it came from an AI because ChatGPT substantially rewrote your paragraphs, revised your structure, or generated new material, that's not *your* voice anymore - and that's what admissions officers actually want to hear. There's a meaningful difference between asking an AI to suggest synonyms and asking it to rewrite your essay or generate new ideas. The former might be okay in some contexts; the latter isn't.
If you're genuinely struggling, consider other routes: ask a teacher or mentor to give you specific feedback on what's not working, read your essay aloud to hear where it sounds forced, or write multiple drafts and pick the one that sounds most like you. Your actual thoughts and voice - even if rough - matter way more to admissions than a polished essay that doesn't sound like you.