It is good that you went out of your investment immediately when you saw where the price of the coins going down. When it comes to trading this is known as panic selling and that is when you see the price dropping, and you need you immediately decide to sell of all of your coins in order to prevent further losses. In some cases this may be a good idea, however when it comes to the main cryptocurrencies like Bitcoin it is almost certainly going to increase in the future however this could take years to happen. The important thing is that you are able to have patience until it rises again.