Help with autobiography

Can you guys help me with grammar corrections and tell me where my sentences doesn't make sense or what would make it better?

Starring at the outside world from my old house balcony was one of the things that I enjoyed most during my childhood. There were so many things that seemed miraculous and impossible for my eyes to believe. Tall and enormous trees, birds singing and flying around, the particular smell of green fresh grass, but nothing was as spectacular as airplanes soaring into the blue sky that disappeared minutes later in the horizon as if they were swallowed by the sky. Many years have passed since then. It’s hard to believe that time has passed so fast and yet, one can remember specific and special moments with tremendous detail. But even in this fast-paced world, we are presented with many adversities and obstacles that we must overcome and it is this that brings changes in our lives.

It wasn’t until almost four years ago that my new life in this country started. Being born and raised in a Spanish-speaking country meant that the process of assimilation in this country wouldn’t be easy. Little did I know about the people and culture of this country when I moved here that I was shocked the first day I went to school. Not only was I the new kid in the school but also I couldn’t speak the language well. This inability to talk and communicate with others properly had a huge impact on me. It was hard to understand my teachers; it made it harder to make any friends, and it was even embarrassing to talk in class in front of others. And it kept being this way for several months after my arrival at this country. It was frustrating not being able to talk the way you wanted – to express and portray yourself as you want to. As a result, I started to become a self-conscious person who kept thinking on what others were thinking about me, if they were making fun of the fact that I talked funny, or just how pitiful I seemed.

Academically speaking, I was used to be an outstanding student. This was due to my parents who always pressured me to do well in school but mainly because I liked to succeed in school; it gave me a sense that I could accomplish something if I put some determination and hard work into it. This didn’t change even after I moved here. But the problem was with the kind of classes that I had. Because I wasn’t one-hundred percent proficient in English, I was assigned to classes that were not challenging at all even though I was pretty good at that certain subject. Even until today I believe that that hindered my overall performance in high school. When I compare myself to other classmates, I see that they took more advanced classes than I did but it wasn’t because I wasn’t good at one particular subject or that it was too hard to me, but because of the fact that I simply couldn’t take those subjects because I was assigned to the lower rank classes in the beginning. Although I didn’t have the most challenging course load throughout high school, I did my best with what I was given and that I think what counts.

But everything hasn’t been bad the last three years. First of all, I have been living in New York City, place of the best Italian food, best bagels, and best places to shop. New York’s subway is amazing and its network it’s so extensive that even until today I have to look at the subway map to know where I am. There is a huge variety of people in here. I’ve met quite a lot of personalities throughout these years and made friends who support me and have helped me pass through these tough years. My English has gotten better as well since I moved here. And as a senior now, school seems a lot better than what it used to be when I was a freshman. Most of my classes are what I wanted them to be – challenging and with competitive people. Several of these classes have inspired me to pursue a career in engineering. And with college just around the corner, there are yet more challenges to overcome.

As a child several years ago, I wouldn’t have predicted the future where I am in now. Perhaps this wasn’t what I wanted or expected back then. And maybe three to four years from now, when I am finished with college, I might be amazed by where I ended up because that wasn’t what I expected when I was in high school. But not knowing what will happen in the future is what makes life more interesting and challenging. The thrill of living is that you don’t know what’s coming – uncertainty is what makes our lives fun.

Thank you so much!!!