Well it really just comes down to how bad do you want it , in my personal experience when you sacrifice a lot to do something you love it will pay off at some point.
In my case I took up a martial art just when I was starting college at that point I had a well paying job and basically could buy most of the shit I wanted , but after 8 months I really fell in live with doing it so I quit my job and focused all my attention in getting better at it.
I went from someone who could buy whatever he wanted to someone who couldn't afford to get a Starbucks with his friends, I still worked a little but all the money I made went for stuff related to school etc..
It was hard but I did it happily because it is what I love doing , somewhere in between this time this martial art / sport had a little of a boom in my country and it started growing more and more , so basically after nearly 4 years of starvation a guy opened a gym not so far of where I live and I was hired there to teach , now I'm making more money per hour than anyone at my class does while doing design stuff ( I'm and industrial designer ) , at the moment I'm giving a few classes but as soon as I finish whith college at the end of this year I'll be doing thrice what I do now , I will be able to fund my own design business with that money and then even open my own school , so thing are looking great
So from my personal experience whenever you work hard and make sacrifices it will pay off at the end , of course this will only work if you are really passionate about what you are doing because if you are not you will not be able endure the sacrifice and you will give up halfway , also there are lots of ways you can find to save some money , you could even try doing some work filming stuff for people science that is what you are studying etc..
Good luck man