Hi Mil, if you cannot change your circumstances immediately, make a good plan (or at least outline some direction what and how you can achieve that) and start working on your plan, and hopefully the knowledge that you making steps towards your goal would distract your day to day suffering.
If I were in your shoes my goals would be:
1) graduate with the best grades achievable
2) get into the college
3) move to the biggest city in your country
4) get a job
5) gain financial independence from your family
6) emigrate into Canada, Europe or USA (in that order) - as a student, postgraduate student, refugee or illegally (as last resort)
Somewhere along those lines, not necessarily in that order.
Life is long, if you work every day, in 5-10 years you'll be independent and free to pursue your dreams.
Don't ever get married...
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