save them if you can. If you hold your ethereum from the begining of this year, you may x20 your mining balance right now 
believe in the coin bro. They are super good for long term investing. But right now I suggest you to sell them and rebuy them when they are low
I guess that is how it really works when you're involve in trading, buying when the price is low and selling when it gets high but isn't it much better if you keep on holding it if you really believe on the capabilities of a coin? I think there is a much higher chance of getting more profit just like what happened in bitcoin as we can see how the price when up from the beginning of the year until now. We really can't tell the future of a coin but just invest what you can afford to lose. believe in the coin bro. They are super good for long term investing. But right now I suggest you to sell them and rebuy them when they are low