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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.
You have a point here, there are some hodlers are already for sure made a lot of money from their investment, some are taking profits for sure from their entry before were already given some good profits.
But on the other hand, holding may lead you to bankruptcy too, risk is still there, and we are not sure about the future at the moment.