I think those who have bought bitcoin around 2017 has either dump half in December and made a lot of profits or just holding a few and continue to keep buying in dips. But for much earlier adopter, I don't think that they are affected by this dramatic fall in the price. Holding is more of a mental thing, yes its really though, I guess the best thing to do if you are really a good investors is to long at your investment for long term and I hope that you really invest what you can afford so that you are not that impacted when the price goes down.