Hodl, crypto winters always turn around and come back to a record higher high. Crypto tech ain't going anywhere, and more and more money is just going to flow into the crypto market over time, pushing crypto prices up to higher and higher levels. Unless you have no choice, do not sell and materialise a paper loss, just wait until the market turns around again. If that means moving your crypto off an exchange to a wallet, and forgetting about it for a while, just do it and wait as the market will rebound.