It all depends on the type of od coin you have invested. There are some coins that are meant to be hodl for a long term why some are for a short term. The most important thing is to know when to take your profit and also stop your loss.
Today, many investors are trying to profit from cryptocurrency in a fairly short time, but if you consider investments for a long time, in any case you need to choose only those projects that will be in demand in society and coins will be used for the purpose in practice as intended by the person. Otherwise, it is a waste of your money.