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?
I came in here in 2016 and really earned a worth of 0.2 BTC but yes I used them for my expenses then and there and seeing this year's ATH I really thought, what if held the BTC earned. Like wise, I had around 500 BNB, 100K Matic and really sold them at very cheap rates in 2018 but yes for profits. But I learnt later that I should hold long, invest in long term and never sell them off in panic. Now started to accumulate few best coins. The journey brought me confidence in Bitcoin and Crypto currencies.