What is the difference between making a mistake and choosing to do something stupid?

Note: for the purpose of this question, use your own definition of things that you consider to be stupid, because I’m sure we all have slightly different ideas of what we consider to be stupid, and what we do not. Also, if it makes it easier for you to answer this question, feel free to substitute the word unwise, or unhelpful for the word stupid.

Sometimes people do stupid things. Sometimes people make mistakes. Sometimes people do stupid things and then claim that they made a mistake. Sometimes people do the same stupid thing over and over again, but still claim to have made a mistake.

Sometimes people do stupid things because they don’t know any better. Sometimes people do stupid things, because doing the smart thing is harder than doing the stupid thing.

Sometimes people do stupid things, because they simply don’t care how stupid it is in the heat of the moment, and only despair about it after the fact, when the stupid action is causing a problem in their life.

Sometimes, even when people realize that doing a particular stupid thing is messing up their life, even if they know there are other alternatives that will likely make their lives better in the long run, they still continue to do the same stupid thing, consciously. Why do you think some people do that?

Are there any stupid acts, that if repeated, are still considered simply mistakes? Even if those acts are done over and over again?

When does a making a mistake come to be considered a stupid action, and no longer just a mistake?