make sure you keep plural with plural and singular with singular. Some flips in the first para.
we seem to be a microcosm of what NYC would be hadn't they been on steroids.
I'm confused, what do you mean?
a city great; a diverse population, <semi-colon misuse. use a colon>
a diverse population, hard workers, and fair minded individuals. Unlike most, we also have an insane philosophy of caring for one another.
None of my city can be distinguished any more.
<transitions would help. about this first line of the paragraph, ask yourself why you say this>
Moving to a certain neighborhood, you'll be surprised to see who comes out to mow their grass every Saturday. Moreover, you'll be delighted to see that the manicured lawns don't exclusively belong to white businessmen with their Black BMW's.
<you is informal. I see some sarcasm here, but make this more a personal statement. why will I delighted to see such a thing? explain and tell more about how this community/city has affected you.>
What I'm getting at is our special gift of not being intimidated or judgmental, while continuously staying optimistic.
again, somewhat informal, at least I think so.
, as clichéd as it is, <seems like more looking down on people, does this mean that you don't want to fit into cliches? that you want to be different? maybe say that in a less cynical way?>
my DNA <about this usage, it's interesting, but character is not an embedded trait...it's not natural to all. by imprinted, do you mean it's been stamped on? that this world has made you thus? that's interesting...>
Comments: maybe less on how this world is, although it's VERY descriptive, and mention more how it has shaped you. about "character" what do you mean? As a "westerner," maybe I don't understand what you're implying.
Good luck!