Why do you panic? Why?
IF YOU DO NOT SELL, YOU DO NOT LOSE ANYTHING! YOU LOSE THE MOMENT YOU SELL, after you purchased high and buy low. It does not matter what is the price ATM, the only thing which matters is what is the price when you decide to sell. So, to shield yourself from losing money, DONT sell under the price you bought it.
If you trust in crypto and believe it ll bounce back, WHAT THE FUCK IS THE PROBLEM AND WHY PANIC?
If you do not trust in crypto and you have doubts whether it ll bounce back, well, in that case you are in the wrong industry and you shouldn't have invested in crypto in the first place.
So knowing this, what is the problem again?
What you are saying is true , if you trust in cryptocurrency then what ever rate you have bought it dont get afraid as you will see your buying price, only thing is that you have to wait but you will get your price and if you can buy some more on lower price so that your average buying price will go up.
I believe this is not about how someone earned or how someone used their strategies to sell at high or buy at low. Actually the main objective of not being a panic seller or buyer is to trust your coin. There must have a proper research on whatever coin you are going to invest in, the goods and bad and the nature. How they go up and how they behave when going down, so no need to panic.