Going long definitely requires faith. Every sudden drop is a test of your psychological endurance. I have always been bullish, but I just can't stand the test. I can see Ethereum above 6,600, but yesterday I shorted Bitcoin at 67,700. I went bankrupt because of a small-scale inducement to go short. I don't have enough faith, so I can't hold on, so I am doomed to fail. Yes, people in the currency circle who have no faith are doomed to fail... Because many coins are air, and they can't be held without faith.