When everything is getting down, selling your assets is nothing but a panic sell. Remember last September, when everything was falling down, and how BTC grew again in a couple of months. Panic selling is what investors are always looking for, in a kind of cycle: investors and speculators said BTC -for instance- is going to disappear. Everybody begin to sell, so the price low itself, pointing investors to buy again at a really low price.

Then, after a while, they speak nicely again about BTC and pronostique all kind of beauties, so people begin to buy it again, and its price increase again and again, until the process begin one more time. So, meanwhile, there are tons of people making money, your money, and the money of all those whose BTC where sell in a moment of panic at a low price. In my opinion, when prices become low, the best movement is to stay, conserve your assets and wait: it will rise again.