I have heard many people say that never sell for a loss but what does it actually mean ?
Assuming you have bought a coin at $10 and the price goes down to $9 but you don't sell.
You could have placed a stop loss at $9 but you take "Never sell at a loss" so seriously that you decide to not put a stop loss.
The price goes down to $8 but you are too good at HODL. Suddenly the market crashes and the price goes down to $5.
You could have limited your losses at $9 but now your portfolio is down by 50%.
Now the price has to go 100% so that you breakeven with no loss no profit whereas you could have bought back at $5 and gained potential profits using a stop loss.
This is why I think "Never sell for a loss" is a myth and we should always use a stop loss and play safe with a good risk to reward strategy.
This actually depends on person to person, some people are traders, for traders, having a stop loss is very important, you cannot even trade without a stop loss in your armoury, but for the investors, the issue is entirely different, for them it's about holding good positions and carrying those positions to a time when everything just skyrockets, the investors should never ever sell for loss because they aren't active every day in the market and once they sell, it's not necessary that they will immediately find another opportunity to enter the market at the correct point. Traders, on the other hand, should definitely have a stop loss because, for them, every drop can be a potential entry, moreover, their capital is all that they have, if they lose it they will really become zero. So it depends on what you do, there is no one universal truth.