Now it's time to hold on so that in the future you will not regret your decision to sell a coin. Since the market is now unstable, you can get into a minus with your sale.
For now let's hold it. Resell it afterwards! Maximize every opportunity. Lets wait for the market to be better again so that we wont regret and we will have every benefit of each coin.
The crypto-currency market declines without stopping. If you wait, you can wait until the time when the coin etherium will cost more than 150$. There is a very high probability that very soon it will be so.