I prefer holding long term but I sometimes trade some coins because if there is a obvious opportunity you should not miss it. Trade and hold, it depends on coins as well.
I do agree with you sir. Most of the newbie tend to sell their coins even if it is still below its ICO price which results to a down trend in its price. But if a coin has a great potential to grow, I think that patience in holding it would result to a great profit also.