Mistake (s)

OK, yes it's a mistake. I know it's a mistake.
But there are certain things in life where you know it's a mistake, but you don't really know it's a mistake. Because the only way to really know it's a mistake is to make the mistake, and look back, and say, "Yep. That was a mistake."
So, really, the bigger mistake would be to not make the mistake, because then you go your whole life not really knowing if something is a mistake or not.
And, damn it, I've made no mistakes!

Lily Aldrin, How I Met Your Mother, season 1 episode 21.