@394b5c0e My wife cuts mine. No training or anything. She's been cutting it since college. It's saved us roughly $2500 so far over the years.
@7f888041 I used to enlist help from my wife to do the bottom of the back and my neck, but I've gotten pretty good at using my opposite hand as a guide and doing it blind. I don't even use a mirror anymore. Just do it all by feel.