it's a simple rule. just don't panic. seeing the price go down makes me happy as i can buy more coins at lower price levels. people just have to realize that panic sellers are always losing. at some point when the price is going up and they feel good about buying, they end up buying at higher price levels. it's just stupid. keep holding.
Yes, only those people make good money in crypto market that do not panic when the coins are going through dumping phases because they have good control over emotions and treat this time as an opportunity of buying coins at cheap rates. Just stay calm and believe in your coins.