Just try don't panic sell and keep hodling, this is not end of Bitcoin. I'm sure the price will rise again...
If you have a money you can buy more Bitcoin again, I think this is the best time for buy because Bitcoin got a discount from panic sellers...

very right the price goes down making a purchase. you should be patient first because the price drops only a few days, I hope you monitor price movements for the next few days because if the price still moves down you will get the cheapest price. do long-term investments and wait for prices to rise to sell.