I would say just hold tight. You can lose a great deal if you panic now. At some point the crypto market will have to bounce back. I had a great deal of ethereum that I now sold for steem. I'm hodling steem until the market recovers. This is a breaking point for some people, but I feel this time will reveal who the more mature investors are. Just remember when the price drops , people are making money! In other words if you sell now, you are gonna regret it when the correction happens.
Also go and have a look at some old graphs of for example bitcoin and litecoin to see what happens to crypto prices on 1st of April (April fool's day)

Anyways here is a funny pic someone from reddit.com/r/bitcoinmarkets posted on slack: