I've been cutting my own hair for some time now, and I have to say that after a while you develop a certain level of proprioception for where the buzzer is at.

I've been cutting my own hair for some time now, and I have to say that after a while you develop a certain level of proprioception for where the buzzer is at. I don't even look at the mirror for most of the time I'm cutting, only to check if I did it right. And almost always I know the instant I cut too much (because I get the same kind of cringe feeling you get right when you throw a basketball and know instantly that you missed). Then again, I have a "good enough" attitude for haircuts - but people are genuinely surprised when I tell them I cut my own hair. I think this is because I've gotten better at cutting my own head of hair than what a random barber would be capable of.