In most cases, experienced traders and investors out there are hoping for Bitcoin to drop in value. This is for a short while. The reason is that they want Bitcoin to be cheaper at the moment so that they could purchase more Bitcoin at a lower price. So when Bitcoin crashed or drop tremendously in value, buy. Do not hesitate because Bitcoin will recover quickly.
But when the big cash happens investors will wait to buy at an even lower price because let's face it, after the big crash we are going to go into a period of maybe 1 or 2 years of decline in which time BTC will decline back to under $10,000. This is almost guaranteed because this amount of gains cannot be sustained for such long periods of time.
Just like before, the price of bitcoin has dropped significantly and at a long period of time but it rose after.
It would be up to you to determine whether it's time for you to cut your losses or continue to believe. When Bitcoin crashes or drops in value tremendously, it may be possible that the bubble has already popped. If the events that occurred would contribute to the popping of the bubble such as the tell-tale signs of panic sellers and profit gainers, then it may dictate that bitcoin has reached its end. However, if it seems like bitcoin still has a future then continue to hodl.