if you doubt and have no experience in day trading, better to holding, you can gain profit daily by trading, but the risk are so high, while do holding, you can get profit for long term like investment. you just need to wait without doing anything, keep waiting your profit. once it going up, it will be huge profit for you by holding. but see the coins  that you hold, if it's not in good coin category, better to find good coins to be held.