No, dont sell, all the altcoins are always going to go up in some time, the whole marketcap is always going up so it means that it will keep going up too.
Dont be so greed, and do not be impatient, the price is going to be up sooner or later.
Dont be like me, i sold 0x at $0,20, and i was holding more than 10,000 of them at that time.
Now i could have more than $15,000 if i was not a dumb guy .
a few days ago I bought the NXT with the price expensive, and now the price is declining. should I sell or hold?