I don't usually comment back on something that's a little tired but you had such an interesting avatar, and yes, the fact that all of this spills over to your friends and family makes it important to recognize early and do something about it (in this case, if you are one to regret, then just don't get into Bitcoin).
Move on, grow, learn, don't get stuck in the past indeed. Have a good day bro.
Learning from mistakes is one thing that humans should have, that even animals have. If an animal does something, and let's say it hurts, like touch some plant that hurts their paw or something, they try to not do it again, and even if for testing they try again, and it hurts again, their brain memorizes "touching this hurts, do not do it again" and stops. Even an animal with a simple brain can do that, so humans should not be having trouble learning the same skills and not make the mistakes again and again.
You do forget that touching a plant that hurts you will still be something to try if the plant provides you a benefit. Or we remove the thorns. We're not animals, so we can still enjoy a rose or eat a cactus

That is why people go back to drugs, to gambling etc. The benefit is there. Anyway, never understand these kinds of posts, you're saying what we all know, but please don't simplify in error.
The regret cycle we're discussing, ( by the way you need to read up on the thread of conversations, just not sure why you think what you posted adds any additional value to the ongoing discussion

) is not about learning lessons strictly but about this emotion of regret leading to satisfy a disappointment.