I will never be able to calm down if the coin price at the exchange place falls because it can make me lose a lot and lose the assets that I have. I better secure assets by selling them even at low prices.
In my opinion this is a bad strategy, selling at a low price or cut loss,
I prefer to wait to get profit rather than have to cut loss so that when the market drop then be patient is more profitable.
Is it like there is a guarantee that price would always come back up and if so, how calm would a trader that bought Bitcoin at $19000 or Ether at $1400 couple of months ago be feeling at the moment? Times change and so do people, right now I would recommend HODL only to people with deep pockets, those who can write off their loses without drunk-driving.