i think when you have already bought btc at 19k$ then at this moment the price of bitcoin would be too low now for you to sell, then i suggest you should leave them and start buying some new bitcoin, begin trading with your new bitcoin with your own money, believe me, bitcoin will surely rise more than 19k$ in the future.
Never sell at your loss, this is my personal experience as a trader I always panic after seeing the value begin to fall and with this attitude I always find myself losing my investment, better to keep holding as time passed by and the market will start to rise back again, maybe it will be a long time holding because of the current value of bitcoin but for sure it will jumped back and make another height, try to do what the previous reply above me just said,
buy another bitcoin and try to work with trading while holding those that you bought @ 19k$ price.