I think the Bigger lesson here is don't ever sell if your supper wrecked. It's to earlier in the game as long as you didn't buy a straight scam coin eventually it's going to rebound to even or more than likely your going %1000+. I read about a guy recently that bought the top of Wolongs epic Doge pump in 2014 and he rage held it till this year and made his money back and more.
That is simpler said than done. Imagine you have invested money like him that you can not afford to lose.
It will take enormous nerves to go through all the dark days. Such a financial presure and feel of that you failed can easily destroy you. Add to that the constant presure of our trolls over all this time telling how bad and scam this coin is and so on.
Heck you have to be very rooted and a strong person and know exactly what you do to go through that withotu selling.
But then if you are such one you are hardly the one that put all in and more than what is healthy for yourself at that peak.
And yes that's a bit the bitter ironie of the darkcoin/dash history. Everyone that bought no matter when or at what price peak and just hold simple won. But how you knew that's gone happen?
Chances of a complet lose is also always a possibility of an outcome of something you just hold.
That's byway something I discutated long with my brother back then when I was in stock trading. He was exactly of the opinion that you can't lose if you just hold and I explained him that this is a very bad thing to do especially in the stock market for several reasons and with the time he learnt why by his own experience in the market.
Irronical when it comes to crypto I am using his just hold strategy on several cryptocoins including dash nowadays and very successful. The hold strategy is good when the fundamentals are right and the outlook is bright and you went in sane and patient.