Long time holding investment is a very good thing when dealing with crypto currencies. There are some coins that has there price being on a low at a particular time but if one can be patience enough by holding for a long time, there's probability that the coin price will increase very high in the future and that will be a great and huge profit if you sell the coin by then. Long time holding is not advisable to be practiced on so many coins, the best coins you can hold for a long time is bitcoin and ethereum because they have a great future and they will be highly rewarding later if hold for a long time. So long time holding is a very smart thing to do.