The lesson is the best bitcoin investor and trade doesn't resonate the slightest bit of emotional discomfort because they understand the game and they fully accepted and embrace the risk where they know that buying bitcoin are probable not guaranteed.
Everyone who invests and trades is a risk taker - Yes, but not everyone is able to control their emotions and know the risk.
This is an individual matter that varies from person to person so we can never expect everything to be in balance. See how many regrets they have, but by themselves they will become stronger because of the experience.
I'm a risk taker, but I'm not as successful as others at controlling my emotions especially when I want to buy on a dip. LOL