We should believe in bitcoin because its the time where one can buy bitcoin as the price is low, once its high we will be glad that we purchased it. We all know that the market is volatile so the price keeps changing, it has a chance of reaching moon. We all know that there is risk in any kind of investment if you want to go risk free, then you can invest in money which is centralized. In decentralized money there is a bit of  risk but as a crypto investor we should always believe in it and keep holding rather than getting hype and selling it out.