Today I drove around the block and hit a mailbox.
How exactly did you end up running into a mailbox?
I wasn't paying attention to where I was going.
It's extremely dangerous to not pay attention while you're driving. This time you hit a mailbox, but next time you might hit a person. You have to be careful when you're driving.
But I didn't hit a person, why are you being so serious?
Well driving carelessly could result in hitting a person down the line. This is why you should really try to be hard on yourself in this situation so you know to fix the behavior.