Long term investment is a very good thing, but you have to be careful with the coins you will be holding for a long term, so coins will not stay for so long because they don't have a real user case, so when holding for a long term, just find good coins and hold, coins that will stay for years to come.
Therefore, we must be able to determine the best coin for long-term investment by doing our own research. Holding in the long run can only be for coins that have good growth, high stability, and certainly strong to survive in the crypto market.