You should have sold all the coins very early, so the market crash has almost no loss for you
In a market you are likely to be a loser whatever you end up doing.
I see a lot people now regret having held their coins instead of selling them, but that's nonsense talk
after the price has gone down. What if you sold at $19,000 and the price kept going up to $50,000 by now? You would be dealing with the same form of disappointment. Losing money for most people is psychologically no different from losing out on potential profits by selling way too early.
People's main problem is that they are too dependent on the money they invest in crypto. It's either borrowed, or their life savings. No wonder they feel horrible.
I still remember when bitcoin started his bull run after 2013's fatal MtGox crash which is the biggest crash ever on bitcoin including the current one (well actually there was one even worse in 2011 I think, a 90% crash). Anyway, the point is, I remember when the price started going up and then approaching the $1300 former ATH a lot of people were saying to sell because wouldn't break it, or it would quickly collapse. We will see something similar when we are near $19k again.
And remember that many analysts got it wrong. Tone Vays said $7500 best case scenario for 2017, so we are going to once again see a new ATH that blows everyone's minds and most people will sell way too early.