As the title says, please share your costly lesson about cryptocurrency. So others users could take a lesson from your story and they would get the advantage of it without losing anything.
When we learn a lesson, most of the time we lose something. And there are a few losing stories where we lost a lot and that's the reason why I consider this kind of lesson ad a costly lesson. I had shared previously my story, I will just remind it shortly.
In 2017 I had almost 1.5BTC and I hadn't sold even Bitcoin was around $19K above. So we know the Bitcoin dump story. Since Bitcoin was dumped too much I wondered to increase portfolio by trading or holding alts. So I just choose a few shitcoin. Some of them were delisted from the exchange, so I moved all-in single shitcoin. Sadly that's shitcoin is totally useless. Perhaps it's worth $1K in the current market. So it was a costly lesson for me. Don't choose a shitcoin for investing purposes. Just invest in Bitcoin and hold it. You will never regret it at all.
What is your costly lesson?
One of my unfortunate decision with crypto occured during the 2018 dump. I was too hopeful that the value of bitcoin will still be revived until years passed by and it hasn't. I was forced to sell at a low value without knowing that a bull run is about to happen as the pandemic covers the whole world. Regrets, mistakes, that's what teaches us to make better decisions specially with regards to crypto. We now learned how essential holding can be and how wealthy you could've been if only you knew how to wait patiently. Nevertheless, regardless of all those regrets, make sure always you learn a lesson from it so that you wouldn't be committing the same mistake anymore.