Regret when regret is of no use

I became acquainted with cryptocurrencies in 2012, especially Bitcoin, and we viewed them as illusions and daydreams. At that time, Bitcoin was worth less than dollars, and in 2017 it jumped to $700, reaching $596.22. Now, Bitcoin has escaped, and we couldn't reach it, while other currencies are evolving. I regret when regret is of no use.

The lessons I learned:

Lesson One: Do not follow the illusions of ignorant people.

Lesson Two: In the crypto world, you must prioritize education, learning first and foremost.

Lesson Three: You must establish your own knowledge based on science and not listen to others' opinions and illusions.

Lesson Four: Do not fear or worry; you must take risks, but they should be calculated risks...