In general, it depends on the market situation and the reason why you got into this situation in the first place. If you see that you really made a huge mistake entering the market the price of the coin was actually high, and there are a lot of chances that the correction is going to be huge, then you'd better sell those coins if you are not in a big loss so far. But if it dropped sharply and you didn't manage to sell it before, you in a huge loss know, then you better hold until the price starts to recover again. When I started trading in this market I made a huge mistake once. I bought Verge its price was 0.10$. After that, the whole market started a continuous correction that lasted more than a month. And the price of the Verge dropped to 0.04$ That was a huge drop and loss of my savings. Even when the market started to recover again, the Verge stayed low. I already didn't expect it to recover again. But one day it started to grow fast and persistently even when the other coins were down. And it reached 0.085$. When I found out that it is the biggest price it could reach then, I decided to sell it. Yet with a loss but not that big loss. Anyway, I had money to reinvest in other, more stable coin which brought me good profits. So, if your coin drops big, just hold. Never accept huge losses. This market is winning from such people who get scared and accept their losses.