Well, hard work is good for the soul and it can get you ahead. However, there is another saying: Work smarter, not harder.
I guess it all depends on the philosophy you wish to follow. Not every path is the same for everyone. We must all create our own destiny in the best way we know how. Many times success is just plain luck. Talk to 10 successful people and you will likely get 10 different stories. The big ticket, I think, is DON'T GIVE UP. Good luck with your studies! Always seek to learn and you should do fine.