The trick is to remove the folicle entirely, so calipers ideally but if you don't have access to those then I'd suggest plucking but you'll need two mirrors to identify the troublesome hair and carry out a successful removal.
Technology's come along in recent years for this terrible ailment and there's a few treatments out there for anyone suffering in their lives because of it. I think the biggest breakthrough will lie in removing the stigma that surrounds it and Its good to see people speaking up about it nowadays.