It actually depends on what kind of investor/trader are you.Some would hold no matter what and some would tend to sell out when they do see gains.
Its just like how it works.There might be some bullish predictions or rumors but those things aren't still guaranteed to happen.We know on how this
crypto market is way too unpredictable that's why if you do aim for longer prospects then better stick out to the best coin out there which is bitcoin and to some altcoins as well.