Hi Dilara. First, though laudable that you have such ambition, it is my recommendation is that you not attend an Ivy League school. A) They're incredibly expensive for the value that you receive; perhaps if you get a full scholarship, this point is nil. B) It is highly unlikely that you will be challenged to think for yourself, but to conform to the prevailing group think. Even in non-Ivy league schools there is a danger of the latter so be very careful about your choice of school. Regardless of the choice of an Ivy league school or not, your essay will be impressive if it is well-written (i.e. good grammar, correct spelling, organization) and describes a vision of where you see yourself and how you think the school will help you in that regard. Equally important is to reflect on how the school will benefit by matriculating you. Schools want students that will bring credibility and honor to their institution so that other students will want to come to their school and achieve equal or better success as future graduates. Describe your strengths, what is unique about you and how that will benefit the school.
I wish you all the best in your endeavors.
“Every man made disaster begins when one man [allows another to think for him/her]. However benevolent [it seems], the ultimate outcome is tyranny.”
― John Kramer, Blythe