Exactly now its not the time to sell, but when the price rises only to a certain extent its possible to sell at the peak price as its falls gradually in a short time.
I think its right to sell if you can gain profit from your coin by 5-10% of its whole value or maybe if you can profit around 5-10 dollars of the price when you have bought your coin.
Short term profits are nice if you as trader know how to trade properly and you have some coins in your cold wallet to hold for the long term. But if you take profits with all the coins that you have, then it's quite risky as you may end up buying back at higher prices when the price doesn't go down.