To answer your original question, You said you make 2k per day in 2 hours but if you try further you end up with losses (I hope i got it right), well seems you are working on a strategy involving certain time period & beyond that it fails, so solution would be to try & increase quantity bit by bit rather than time frame, to earn more.... like CV said if you can make 100 consistently (in stock market) you can make much more too
as to why you loose after the 2 hours, no one can comment without knowing what is it you do...
its the quality of trade that counts not the quantity...
also everyones pocket size is different so ask yourselve, is 2k ok ? that's 2k x 20 sessions = 40k p/month, not many salaried people earn that.