It depends on the coin we want to deal with,there are some coins that are good simply for short term trading
and there are some coins that are good for investment while some coins are also good fof buying and holding...
i personally prefer to buy and hold whenever i am on the
cryptocurrency market and that is why i ensure that i
buy only coins that i know that will have their price increased in the future so i will just simply buy the coin
at a cheap price then keep and hold it till the coin starts getting increase in price then i will now resell the coin and earn profit from it...