I am having a lot of trouble writing my why northwestern essay. I was going to write about the unique opportunity for Students interested in an area of concentration other than those listed and how they may design a series of three courses with a consistent theme in consultation with the Director of Undergraduate Studies for the Department of Chemistry, and my idea for what I would do as my area of concentration and how I would use the city to my benefit. Does that sound like a good essay?
Dunno. Write it and see. 
Can’t know until you try.