OVERVIEW:
         You have an interesting premise and an emotional story. However, it's very jumbled and all over the place. It's a big problem that the set-up is never delivered upon. " I guess its time to tell my story to the world and share how I got to this point," turns into a tale of John's parents, primarily father. It feels like there's a bait and switch. Even neglecting the disconnect between what the story starts off appearing to be about and what it ends up about, it's still hard to follow. You might consider putting together an outline containing what's the basic information you want to convey and in what order. This is most noticeable in the third paragraph where you really dig into John's father.

Example:
A.) I'm John Paxton
B.) Family:
         B1.)My parents were
         B2.)What happened to them
C.)My Father
         C1.)My strict grandfather
         C2.)My Father's personality
         C3.)How I Feel About My Father
D.)Football
         D1.)My Father's Football Exploits
         D2.)My Father's Football Scholarship
         D3.)Football over my Mother
         D4.)The End of His Football Career

You have everything you need for great piece here, it just needs structured more clearly. As of now it reads a lot like a stream of consciousness. You just have to take that and fashion it into something more coherent.

You also have a lot of grammatical and punctuation mistakes. I've highlighted quite a few, but to be honest I'm not all that great with where to put commas and what not either, so I'm sure I missed some.

         I'd recommend rephrasing the listing of thing's John had going for him up front. It would be more natural to list them just as things he used to have, as opposed to things he has, I mean used to have. It seems more concise to say something like "I used to have a girlfriend, until she broke up with me" than to say "I have a girlfriend, or at least i did until she broke up with me." I understand what you were going for, emphasizing that John lost these things, but I don't think the effect would be lost much.

I do like the idea of exploring what it's like to be the son of a narcissist parent who was on the path to being highly successful but ran off the road and rammed into a telephone pole. I'm curious whether the problems John ran into were due to him mirroring his father's behavior. I think it could be interesting to have a character who's fully aware of his father's faults and yet does the same thing. Although, that's not the only possible route of course.

In conclusion, I think you have the ingredients for a great story here you just need to organize it a little better, and correct some of the grammatical mistakes.

SPELLING and GRAMMAR:
My name is John Paxton, and I am a Senior at Winchester High School in Davis, Virginia.
Comma and the "a" before Winchester doesn't seem necessary.

I am sitting in my room right now, in my mother's house writing this.

I have a girlfriend, or at least I did until she broke up with me.
Capalization

But, there is so much more to High school than that and that is what I have learned these last 2 years.
You should avoid starting a sentence with a conjunction

Maybe you can relate to the words that are on this page, maybe you are someone who has been torn down by others or maybe you are someone who did the tearing down.

Regardless I am sure everyone has been all three, at least I have.

I am an 18 year old born to my parents.
I'd recommend cutting this sentence. It doesn't add anything to the piece, as it goes without saying that everyone is born to their parents.

My father was the star quarterback of the football team during his time and could have been a great college football player who would have for sure been drafted into the NFL if it hadn't been for his knee and back injuries, because of that he can never let it go.

Football, is the greatest sport that ever was, some believe that.
You have an extra comma before the period here.

What is it about this game that drives all of us to perform at our greatest ability? Is it the rush it gives them?
Question marks end sentences. You can remove the question marks and string the questions together with commas or keep the question marks but format them all as separate questions.
What is it about this game that drives all of us to perform at our greatest ability; is it the rush it gives them, the satisfaction that they are the best at something, the power or status they get from it, or the feeling of winning?
What is it about this game that drives all of us to perform at our greatest ability? Is it the rush it gives them? Is it that satisfaction that they are the best at something? Is it the power or status they get from it? The felling of winning?

For my father, Samuel, it was all of the above.

His father, my grandfather Giles, was a lawyer who was very short tempered and had a lot of expectations for his three children.

My father is from Scottish and English ancestry.

My parents married in March 1997, which was also the year my brother was born which was in October 1997.
You've already said both of these things.

Fast forward 19 years later, my father still feels that my mother should have listened to him.

My mother's parents past away when she was a freshman and it was just her and her younger brother living with my Great Uncle Carter.

As my father was going to pass the ball, a player struck him and tackled him to the ground, but this was no ordinary tackle this was a tackle that everyone in the audience felt.

The referee blew the whistle and it was a turnover, everyone was waiting for my father to get back up.

SUGGESTIONS AND NIT-PICKING:
I guess its time to tell my story to the world and share how I got to this point.
You might consider moving this to the first sentence, it's a little more intriguing. Though the simplicity of the current opening sentence also works well, so maybe move it up to the second sentence.

This was the worst decision ever made, it led to much heartache, devastation and loss.
Great sentence by the way.

My father being the youngest had to all the extra expectations his older siblings never met.
Might consider rewording this sentence to make your meaning a little clearer.

Although we are very much evolved to the american lifestyle for generations now, the one thing that hasn't change is family values and to be obedient to your father, which probably is in most cultures out there.
This sentence is also clunky.