Mistake

"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’d go your whole life not knowing if something is a mistake or not."

Lily (How I Met Your Mother)