You must use Stop loss for each trade.
That is the thing I never use for my trades and because of that I loss almost 4ETH in total. I'm hoping that the one that I hold will back to its high value so that I recover that loss. So that in my next trades I will do the stop loss strategy and avoid big losses again.
lossing is really a part of the traders life. If we don't have to loss maybe we need to become more patience. But it is normal to us as humans we really dosent a big patience specially we have daily needs to provide in order for us to survive. So then I believe that trading can make us loss or maybe earn and that was a normal thing on trading.