More than 25 years.
I have a skin condition called keratosis pilaris (KP), which results in what looks like zits all over my body. Normally, it's a childhood thing and you grow out of it by 30.... I wasn't so lucky. Add to that my PCOS, which results in acne worse than most teenagers today...
I wonder if I'd be able to stop picking at my skin if there wasn't anything new to pick at?