The hardest part of a bull run: holding on. First, the fluctuation is large, and the retracement is also severe. Second, fear of heights, the more it rises, the more afraid. Third, the bottom gradually rises. Fourth, other people's coins rise faster and more fiercely than yours, making you doubt life, and finally unable to resist selling before it goes To The Moon. Fifth, there are too many SBs spreading anxiety and showing off their gains, earning millions or tens of millions at the drop of a hat.