I hope this will never happen of course, but for who have invested capitals, it may be a question someone have answered accurately to avoid an important loss.
You get worried when you don't properly understand how Bitcoin works, the bull, and bear market cycle involved, the volatility, and you go about doing investment. If you do, you should have learned to stomach the short-term price volatility and focus on your goal with Bitcoin, Meaning if you Bought Bitcoin to HODL for a long term, let's say you are holding for a period 5 years and More, then there's no need to worry about whether Bitcoin would fall or not, just relax and wait for that time to come.
I think that even one understands them, they still can worry. It is inevitable you know but the only difference is that they can snap out of it immediately in order to prevent worse things. If we are into longer terms of investing, a volatility in price can still be an important matter to us, like for example if we will buy at lows but for those who are doing a DCA method, then yeah they can ignore it as well.
@OP, saying 'study' seem too deep but actually it is only simple knowing if BTC will dramatically drop like by just basing on the news for example. If there is a severely negative news about BTC or even related to it, then that can surely affect it badly too. Like it or not, it can happen sometimes, so just be prepared with it or else feel free to pack up your bags and leave.