Growing up I never thought about the kind of person I wanted to become
Growing up
, I never thought about the kind of person I wanted to become
It was not until I moved back to Nigeria and saw the state of the country and how it has the potential to become a great nation that I change my goal in life to make the country a better place, this is why I want to study computer science at Syracuse's prestigious L.C. Smith College of Engineering and Computer Science to contribute to the technological advancements that will benefit the people of Nigeria and the country's economy.
You should divide this into several sentences, the sentence is too long and confusing to read. Maybe you can try this :
It was not until I moved back to Nigeria and saw the state of the country and how it has the potential to become a great nation that I change my goal in life
to make the country a better place (you have stated your goal before, so you can skip this.
I want to study computer science at Syracuse's prestigious L.C. Smith College of Engineering and Computer Science to contribute to the technological advancements that will benefit the people of Nigeria and the country's economy.