I'd realize already that we need sometimes to be patient. I don't say I was preferred for a long-term holding as this will also depend on the situation.
From $100 and sold it at $500, and in the next day, it becomes $1,000. You will surely be regretting but because we don't know that it will happen, I don't think it is a need to feel like that. Because the day we decided to sell it, we definitely think that we are right and yes, we even get more profit. t It was not regretting unless if you sell at losing because you were not able to wait longer for the price to recover (in many cases it happens).
It is not easy, I get it, that patience is not really that easy and that is why I believe many people sell early or buy right away whenever they end up finding something. This is not that difficult to decide, it is really something that is basically just "wait until you are sure" thing and that is why it is not really acceptable for failing because you are required to need just one thing and one thing only and many people fail that simple thing, I agree that it is simple.
So, why am I understanding of those people? Because even though it is simple, it is something that is not really built into people's brain, it is not easy, human nature is against accepting slowness when it comes to richness, when you tell someone "get this and you will be rich in 50 years" they will not really see that as acceptable, they want to get rich right now, but people who can wait will be the real rich people.