What's the biggest mistake you committed in your Crypto journey?

Whether it is selling your bags way too early or holding your bags way too late, not buying a coin which you intended to and it pumped hard, buy/sell order missing by few cents. We all made costly mistakes. Some even get scammed due to silly mistakes, some forget their passwords/keys etc. My biggest mistake was to sell my MANA and SOL even though I intended to hold for long term, which made me lose almost 5 figures of profit. So in your whole crypto journey till now which is the biggest thing you regret?