Bitcoin always had a roller coaster ride and due to its volatility it is inevitable that some downfall will always happen in future as well. Only thing those fear in fall end up selling and those who see it as a opportunity buy and when it rises they make money from it. Their is no end of it as else it would no have lasted for more than a decade.
Agree, the fear is what makes some of the predictions about the market prices materialize into a real thing, I would say that if you have just bought your bitcoin and you are not satisfied with the profit when you sell and you are scared that you going to lose, I would probably advice you to hodl on it for longer time because this price drop is just a minor setback.