It's greediness to keep holding your tokens when price is surging, many made the mistake in last bullrun season of 2017 and after February 2018 bears attacked the market dragging every single coins and tokens to its feet, Bear market is always the best time to buy coins and build portfolio and Bull market is the best time to make gains and take profits
Bet you that thousands will still make same mistake as of old (the 2017 scenario still fresh in our minds and can't afford another), their greediness will make them blind toward the pit that will come with this bullish moment in cryptocurrency. I often said this, the ultimate goal for everyone in this industry is for us to make profit from our holdings or in our trades, but some holders and traders won't take profit until the chat turn downward or some miss out of their profits entirely. Take profit and wait for good point to enter into the market again is the best approach.