Chiesu, i applaud your dedication and motivation. Dont let bitter doctors talk you out of what you want to become. Sometimes your own self motivation is what will see you thru. Unfortunately many eager naive motivated entering medical students soon become bitter throughout school and residency. Its hard to maintain that eager attitude we once had when we first arrived and put on our short white coats. When challenging times occur one after the other it just gets really hard. You do have to realize that nothing comes without a price. The field of surgery is definetly glorious but you have to consider the lifestyle and the unforseen sacrifices that surgeons make. However, definetly at this point of time in your life you should strive ahead to achieve your goal. If you want to be a doctor and that all you want to consider doing than have a tunnel vision like attitude during highschool and college. Pursuing such a competitive field requires that you remain focused and dedicated. Once you get into college you'll see how many "distractions" life can throw at you. However, if you're only thinking about medicine then keep your mind open to other avenues and career choices in medicine throughout college. You should definetly associate yourself with those in the medical field. There are a lot of ways you can contribute beside being a doctor. Med tech, surgical techs, CNAs etc,physical therapist. I know a person that works as an assistant in physiatry (physical medicine and rehab and makes $90,000 per year working 9-5 no weekends and no $2-300,00 in loans!) The more "well rounded" you can present yourself to be on your medical school application and personal statement the higher your chances of getting accepted to medical school will be. They are wary of students that say i know i want to be a ______ and thats all i want to be. Those type of students usually stress themselves right out of medical school if they cant for some reason live up to those self proclaimed expectations. Once you get into medical school, and i'm sure your will, you'll see that there are sooooo mannnnyy fields in medicine and a lot of which have surgical procedures without the surgeon's stressful lifestyle --- for example gynecology, radiation oncolgy, etc.
For now you should focus on being a well rounded high school student and on improving your application to get into collge. If you want to apply to a pre-med program, then you should shadow some local physcians and ask for letters of recommendation. You dont have to just shadow surgeons either.
You seem like a really strong motivated student. I'm sure you wont have any problems. Best of luck to you