What are your biggest mistakes as a Crypto Investor?

Curious to know what are your biggest regrets when it comes to crypto investment.

Personally, I believe my top 2 so far will go to:

1# – Selling BTC at $8.5k. I was new to crypto but still convinced myself to buy during the big dip in Feb/Mar 2020. At the moment I was super proud then came the pump in Sep 2020. I was too stupid to see it has long term potential. Bought later at twice the price and now hodl in peace. 2# – Selling some Chilliz (CHZ) tokens I got for free from Binance. I got them for 1¢, did not know what it was, then converted them to ETH when they were at 7¢ but it went up to 60¢ (60x)!