Holding when prices fall low does not mean losing, but staying with low prices is a way to save losses, and losses will occur when we sell low. Crypto prices are always changing and when it falls it does not mean the end, because crypto will be more likely to change to a higher price.
Yep, for that we need extraordinary patience when do trading or make investment. If patience starts to falter, be prepared to accept some losses. You're right, the price is always changing since the coin is alive, unless it's already died so there's no market activity anymore.