Forget the idiots who are waving a finger at you. You have not given us enough information to blame you with being unprepared, uninformed, etc. How did you buy the cards? Can you afford to keep them? Can you afford to keep them mining, pay the cost of electricity out of pocket for the sake of speculative mining? How much risk are you willing to take? If cost is not a factor for the GPUs or electricity, keep mining. Keep an eye out for undervalued currencies, and mine those instead of one that have guaranteed earnings but high difficulty rates. This is the time to be mining for those high reward outcomes. If you don't have the stomach though, yes, sell the cards and buy into a currency instead. You can then come back at a later date when your investment pays back to resume mining.