A long time ago, there was some pornography case being argued before the United States Supreme Court. During arguments, the definition of what porn was somehow came up. I don’t remember which justice said it, but in trying to define it he said something like ‘I can’t define pornography, but I know it when I see it.’
I think the same could be said for mental toughness.
If you’re a fan of the Minnesota Vikings, it’s hard to not feel like the other shoe is going to drop. I mean look, I love this team.