Please can someone check my essay ? Thanks :)

Choosing a university is a very important task in our life. Our future career, job, family and whole life depends on this choice. We have to think very carefully for making the right decision as it will make the major part of our life. The biggest failure in my life that I have experienced, which influenced me greatly, was the time when I wasn't admitted to the American University Of Armenia.
To start my story with, I would like to say that when I decided to apply to the American university I cannot even imagine what a difficult way is waiting for me. And I was thinking that it will be easy to pass the exams and to be admitted to the university. So I was deviated on many others things which led me to the wrong way. I was thinking only about how to spend funny and interesting time with my friends. The lack of serious mind was my greatest mistake.
In the continuation, I was trying to do everything fast and in a hurry to apply early. I was not thinking about the quality of the done job, that was the main reason of my bad exam scores. Only in the end I understand how true is the phrase "Haste makes waste". But, unfortunately, it was too late. Days passed I started to regret what I haven't done in the past, how I lose my time. Moreover, it is a shame for me because I have disappointed my parents, who have done everything for me. I have just understood how much energy and time my parents have donated into my education and upbringing. They have had great hopes accordingly to my studies but due to my stupid mistakes I haven't realized them.
As we know in today's society we need more knowledge and skills to be adapt. So I think that The American University of Armenia can give me the second chance to start everything from the new page because this university can give me opportunities never proposed in any other place. I promise to be more concentrated and develop all of my skills because studying in your university is my desire and I think it can become real.