Fear when others are greedy, and be greedy when others are fearful. In the cryptocurrency world, you can only be greedy when others are fearful at their peak, and fear when others are greedy at their peak. In the cryptocurrency world, there are no fixed indicators like price-to-earnings ratios. This peak is hard to grasp; usually, when it rises, it seems limitless, and when it falls, it feels like a bottomless pit.