If you are rich enough to invest in cryptocurrencies with only a small part of your personal assets, price fluctuations will not have much impact. Long-term holding is a very difficult thing in the market, and price fluctuations can easily affect the decision. Holding is a strategy. Long-term holding will be very profitable if the market can be analyzed correctly.
If you are using spare amount of your savings then doing long is not a problem for you, if the money that you use can easily forgotten
you'll be able to allow each movements inside the market.
Holding is not an easy task if you don't have goals and you don't have spare money, but then again if you are using excess it's not hard
to continue waiting.