Do not be scared of holding, or trading, just do whatever you prefer about both.
Do not be so dumb.. the market is full of opportunities at the moment and just letting them go off is a bad idea.. Everytime that i see an opportunity to make at least 0.01, i take it.
But there are some coins who are in the market only waiting for us to hold them up for a longgg time to make incredible profits.
Other than day trading holding is a passive way to gain a lot of money and trading is an active way to gain a lot of money and you can do them both if i were you i am gonna do it both for double income. Holding if meant for those coins that are succes coins that are famous like ethereum bitcoins and litecoins and other more.