Help with a personal statement

Hello, everyone! English is my second language and every time I have to write an essay for a scholarship or a personal statement I have a lot of trouble finding every little error in them.

Can you guys proof-read this one and help me out? Thanks!

“My career goals have been clear since a young age; I’ve known for a long time that I will do my best to pursue a career in medicine as a surgeon. Therefore, I have also been achieving top marks in school, since those are a necessity when considering such a career. I’ve always been involved in high school clubs and the Air Force JROTC organization, in which I advanced year after year, receiving three national level awards, completing over 125 community service hours and hoping to distinguish myself from the crowd. I know there is still a lot to do before achieving my first goal of attending medical university, thus I’m prepared to work as hard in college by getting involved in organizations such as SAVAC (Student Association Volunteer Ambulance Corporation), possibly moving up the hierarchy ladder one day, and continuing to do my best grade-wise. I’m only a freshman and I believe I can contribute to the campus’ community during my time in Oswego by using my experience and leadership skills that I’ve gained from being a member and then a leader of the Air Force JROTC in high school. Getting involved as well as receiving top marks in college will both undoubtedly help me in getting interviewed by medical schools, when the time, after graduating from Oswego, comes. The more schools are interested in me, the higher chances of being able to take my pick and attend a well-renowned university.”