if what you hold is bitcoin, that is a very good thing. but if all you hold is altcoin, that's bad news. see now bitcoin prices are soaring in the market, the altcoin will actually decrease in price. even some altcoins have decreased very drastically. then I do not recommend to invest in altcoin for now. you better keep hold your bitcoin, wait for the next bitcoin surprise.
True, bitcoin is on hype right now and its price had grown so much and so fast. In contrast, most of the prices from altcoins are falling off, one example is the Ethereum. While the price of bitcoin is getting higher and higher, the price of ETH is getting lower and lower. Just two days ago, I checked its price and it was around 0.039 but now it goes down with another 0.01. How I wish that there will be balance between the coins so that even if another coin is rising, the other token is not drastically going down just like what is happening between Bitcoin and Ethereum.
For me, if you have bitcoin already and have this dream or goal of buying something that seems impossible to buy because of the price, now could be a good time especially if you have been saving up but if you don't have the need to buy something or have something to used money for then I think that it will be more beneficial to hold as long as you can. It looks like that bitcoin will be getting higher.