Whether you are a day trader or you trade once in a while, you have to align yourself with the smart money, not the dumb money, surf along side the whales,not against them, trading is war and you have to choose your battles correctly
That is now most difficult question because of unstable market
being us-stable is the only reason why traders can make profit! otherwise if prices were stable then there would have been no profit to be made. for instance if you buy something now for $1 and a month from now that thing is still worth $1 you made no profit. but if it is unstable and reaches $2 then you can double your money.
however you should not confuse being un-stable with pump and dumps and unpredictability. being unpredictable is what nobody wants because it leads to losses. and the manipulation that we see among altcoins is one of the biggest reasons for it.