Those who have mastered the art of hodling have made the most money trading or investing in crypto currencies. The most basic skill one should have is HODLing.
Two things can help for a HODL investor, having a strong stomach or a very bad short term memory, either one of those will make sure to not sell early our coins. Buying bitcoins and just forgetting about them is one approach, but it might be better to have a strong stomach and thick skin. A short term drop in prices doesn't mean we lost money, that happens only when we sell the coins. Better to sit out the bear market and wait fot the next bull cycle. Then again this depends also where we bought our coins, investors who bought at 100 or 1,000 USD will not be alarmed right now. Its the investors who bought between 30,000 and 50,000 USD who are worrying the most. It could take some time to reach a new ATH.