do not even think to sell anything now if you do not want to stay at the back of the trough. If you already have investments in cryptocurrency, then keep them and wait, everything will get better.
Though not all of them are capable of that. A lot of people lost a lot of money since they thought that the price increasing in the past will be continuous but it did not. It dumped and created longest of it this year. We don't really know what may happen but all we know is that this is the best time to invest since this might be the last time we will be seeing a price like this.