Hmm. This is an interesting approach- I can't say that I've ever seen anything exactly like this in response to this particular prompt.
My main concern is that the prompt asks to "Explain to us a time when you felt intellectually engaged." You talk about being good at many things in your essay, which I'm sure is true. However, you never mention anything in particular, or a specific event to illustrate your statement. I guess you're trying to say that being told you are good at everything was a thought-provoking moment, but it would seem like there are better ways to convey a sense of "intellectual vitality". Do you like to read? Do you love scientific research? I think that is more along the lines of what this prompt is looking for.
However, I understand that it's late in the day and your early action deadline is fast approaching.
Here are some quick fixes:
""It's not fair," my friend Natalie had once said to me, "You are good at everything.""
Change the second comma to a period ("once said to me. "You are [...]""). Also, get rid of the word "had", since it's unnecessary.
"I mean when I was born I was just as accomplished as any other baby, so how have I become the person that I am today?"
Starting that sentence with "I mean" seems strangely colloquial, since the rest of your essay doesn't maintain that same informal tone.
"the words of inspiration that I have received from random people that have allowed me to develop into the person I am now."
What words of inspiration? Any specific examples? And did they really come from "random people", like total strangers? Or do you mean people like your parents, your teachers, or your friends?
"As I write this now reflecting on the defining moments in my life I realize how easily I could have been swayed in the wrong direction."
This makes me a little curious- elaborate on your defining moments.
As for your last paragraph, I'm a little surprised that you suddenly switched from "I" to "we". Why the plural form? Especially that last sentence- it sounds like the mission statement of a Fortune 500 company.
Rebecca L.