It will depend on the coin you decide to buy and the You in person so if you trade well and you now the coin Holding might be a good option but if you dont i will suggest you back away and sell at low loss than going so high and then crashing your funds out
I think it is now a fluctuating market and in this market if someone is losing in his coins then he have to wait and do not need to worry and to sell. If we will be in patience and will wait for longer time with our coins then the price of that coin will also recover and will reach to more higher value to profit the holders.