Yes now I am earning my living with bitcoin, don't take it seriously because i am student and and my living needs only $20 monthly and I manage to about $10 monthly and rest I manage from my website and other affiliate works.
How you are leaving with $20 it impossible that you are not eating paying for monthly bills? and any things for your study..
If we say living you should consider it that you can live eat paying your house electricity bills. in that thing we can consider it that you are living..