Seems like the grasshoppers winning streak is over. You got a long way to go Jinxu, not to put you down but we all have been in your boat. Dont think about how much you make, but how much you lose. So what that you got your account from 700 to 2000 in 1 week? How did you perform your last 2 days? Acccount back down below 1000$ you didnt even enjoy the little profits that you made, so you are going a step back. Work a part time job at least, and learn to trade durin the market hours, that way you have spending/savings as you progress learning. It takes a while to develop a read, understanding and an edge for the market. It was a matter of dayys before your account was going to drop - hence beginners luck.
Best of luck to you man, keep on learning, reading and trading and youll get there. But dont be focused about the $$$, they will come alone once you develop an edge and a great understanding of the market.