There is only one thing that you should probably do right now is that you HOLD your bitcoins for now and just try to forget that you ever bought them. Just don't see the price after few minutes or even after days. Just wait for the end of the year as that is the time you gonna say thanks to yourself for holding your bitcoins when the price would be way more than 19000$. Also, i know it is hard to wait when you know you are in huge loss but i think you don't have a choice here so you have hold and wait for the right time.