This is very simple, and you answered the question already by saying that when the "market turn around". When you buy and invest in the bear market then you hodle for the bull to come and once the bull market appears then if you like to sell, you sell them and if you like to still hodling, it is your choice. And remember you bought in the bear market so you must make profit in the bull market because the bull price has surpass the bear price. And now that the bear is on going, people are busy accumulating bitcoin every day and night and they are buying for the bull to come.
Mostly people invest in the bear market,because then the possibility of get back the investment when their was in huge need.If you inverse the money saved from the income, then you can hold it till the profit was achieved.The money can be earned from the profit if you sell the same in the bull market.The bull and bear market was sequential one, So try to use the market wise and inverse the money in the bear market.The bull market takes time,but till that the traders should hold their valuable money in the crypto asset.