You'd be surprised....
Indeed, I remember my share of sleepless nights. Three days in a row is my record, but it’s my fault anyway. If I haven’t been procrastinating as I have there would be no need for it.
Also, there are people out there in the university that metaphorically bite themselves constantly. And then it bites me in the ass.
But of course, that’s incomparable to the challenge of being a father, I’d guess.