I highlight my own hair. I don't do any other kind of dying though, but have been dying hair since before I even became a teen! I've gotten pretty dang good, and it sure beats that hair salon price, when to be truthful the professional highlighting supplies for an entire bleached head literally costs less than $6! You're paying for the "talent" when you go in-salon.
I dye others' hair, but only highlight mine. I've dyed mine a rainbow of colors in my lifetime (not all colors at one time) but have stuck with my deep natural brunette with some highlights for the past several years and have been happy with that.